diff --git a/coordinator/ui/components/process_ctl.lua b/coordinator/ui/components/process_ctl.lua
index 92ed8bd..6435de7 100644
--- a/coordinator/ui/components/process_ctl.lua
+++ b/coordinator/ui/components/process_ctl.lua
@@ -342,9 +342,14 @@ local function new_view(root, x, y)
 
     local waste_prod = RadioButton{parent=rect,x=2,y=3,options=style.waste.options,callback=process.set_process_waste,radio_colors=cpair(style.theme.accent_dark,style.theme.accent_light),select_color=colors.brown}
 
+    waste_prod.register(facility.ps, "process_waste_product", waste_prod.set_value)
+
     local fb_active = IndicatorLight{parent=rect,x=2,y=7,label="Fallback Active",colors=ind_wht}
     local sps_disabled  = IndicatorLight{parent=rect,x=2,y=8,label="SPS Disabled LC",colors=ind_yel}
 
+    fb_active.register(facility.ps, "pu_fallback_active", fb_active.update)
+    sps_disabled.register(facility.ps, "sps_disabled_low_power", sps_disabled.update)
+
     local pu_fallback = Checkbox{parent=rect,x=2,y=10,label="Pu Fallback",callback=process.set_pu_fallback,box_fg_bg=cpair(colors.brown,style.theme.checkbox_bg)}
 
     TextBox{parent=rect,x=2,y=12,height=3,text="Switch to Pu when SNAs cannot keep up with waste.",fg_bg=style.label}
@@ -353,9 +358,6 @@ local function new_view(root, x, y)
 
     TextBox{parent=rect,x=2,y=18,height=3,text="Use SPS at low charge, otherwise switches to Po.",fg_bg=style.label}
 
-    fb_active.register(facility.ps, "pu_fallback_active", fb_active.update)
-    sps_disabled.register(facility.ps, "sps_disabled_low_power", sps_disabled.update)
-    waste_prod.register(facility.ps, "process_waste_product", waste_prod.set_value)
     pu_fallback.register(facility.ps, "process_pu_fallback", pu_fallback.set_value)
     lc_sps.register(facility.ps, "process_sps_low_power", lc_sps.set_value)
 end
diff --git a/scada-common/rsio.lua b/scada-common/rsio.lua
index 8f4c558..fb3a50a 100644
--- a/scada-common/rsio.lua
+++ b/scada-common/rsio.lua
@@ -52,7 +52,7 @@ local IO_PORT = {
     -- facility
     F_ALARM       = 7,  -- active high, facility-wide alarm (any high priority unit alarm)
     F_ALARM_ANY   = 8,  -- active high, any alarm regardless of priority
-    F_MATRIX_LOW  = 27, -- active high, induction matrix charge less than 
+    F_MATRIX_LOW  = 27, -- active high, induction matrix charge low
     F_MATRIX_HIGH = 28, -- active high, induction matrix charge high
 
     -- waste
diff --git a/scada-common/util.lua b/scada-common/util.lua
index d29a85e..0fe636d 100644
--- a/scada-common/util.lua
+++ b/scada-common/util.lua
@@ -22,7 +22,7 @@ local t_pack   = table.pack
 local util = {}
 
 -- scada-common version
-util.version = "1.3.1"
+util.version = "1.3.0"
 
 util.TICK_TIME_S = 0.05
 util.TICK_TIME_MS = 50
diff --git a/supervisor/facility.lua b/supervisor/facility.lua
index 94d6af1..937a8e7 100644
--- a/supervisor/facility.lua
+++ b/supervisor/facility.lua
@@ -135,9 +135,9 @@ function facility.new(config, cooling_conf)
         avg_outflow = util.mov_avg(6), -- 3 seconds
         -- induction matrix charge delta stats
         avg_net = util.mov_avg(60),    -- 60 seconds
-        last_capacity = 0,
-        charge_last = 0,
-        charge_last_t = 0
+        imtx_last_capacity = 0,
+        imtx_last_charge = 0,
+        imtx_last_charge_t = 0
     }
 
     -- create units
@@ -323,15 +323,15 @@ function facility.new(config, cooling_conf)
                     self.avg_inflow.record(input, rate_update)
                     self.avg_outflow.record(output, rate_update)
 
-                    if charge_update ~= self.charge_last_t then
-                        local delta = (energy - self.charge_last) / (charge_update - self.charge_last_t)
+                    if charge_update ~= self.imtx_last_charge_t then
+                        local delta = (energy - self.imtx_last_charge) / (charge_update - self.imtx_last_charge_t)
 
-                        self.charge_last = energy
-                        self.charge_last_t = charge_update
+                        self.imtx_last_charge = energy
+                        self.imtx_last_charge_t = charge_update
 
                         -- if the capacity changed, toss out existing data
-                        if db.build.max_energy ~= self.last_capacity then
-                            self.last_capacity = db.build.max_energy
+                        if db.build.max_energy ~= self.imtx_last_capacity then
+                            self.imtx_last_capacity = db.build.max_energy
                             self.avg_net.reset()
                         else
                             self.avg_net.record(delta, charge_update)
@@ -344,8 +344,8 @@ function facility.new(config, cooling_conf)
                     self.avg_inflow.reset(input)
                     self.avg_outflow.reset(output)
 
-                    self.charge_last = energy
-                    self.charge_last_t = charge_update
+                    self.imtx_last_charge = energy
+                    self.imtx_last_charge_t = charge_update
                 end
             end
         else
diff --git a/supervisor/startup.lua b/supervisor/startup.lua
index d15ddc5..2a2202c 100644
--- a/supervisor/startup.lua
+++ b/supervisor/startup.lua
@@ -21,7 +21,7 @@ local supervisor = require("supervisor.supervisor")
 
 local svsessions = require("supervisor.session.svsessions")
 
-local SUPERVISOR_VERSION = "v1.3.8"
+local SUPERVISOR_VERSION = "v1.3.7"
 
 local println = util.println
 local println_ts = util.println_ts
diff --git a/test/rstest.lua b/test/rstest.lua
index ba0b156..612d0d8 100644
--- a/test/rstest.lua
+++ b/test/rstest.lua
@@ -13,7 +13,7 @@ local print = util.print
 local println = util.println
 
 -- list of inverted digital signals<br>
--- just using the key for a quick lookup, value need to be not nil
+-- only using the key for a quick lookup, value just can't be nil
 local DIG_INV = {
     [IO.F_SCRAM] = 0,
     [IO.R_SCRAM] = 0,