diff --git a/biofuel-manager.lua b/biofuel-manager.lua
index ff08bfd..0f4b2bb 100644
--- a/biofuel-manager.lua
+++ b/biofuel-manager.lua
@@ -5,9 +5,7 @@ local STORAGE = ""
 local OIL_TANK = ""
 local FUEL_TANK = ""
 
-local OIL_SETPOINT = 64000
-local BIOMASS_SETPOINT = 4 * 64
-local BIOFUEL_SETPOINT = 128000
+local FACTORY_ADDRESS = ""
 
 local SPEEDOMETER = ""
 local SUBNET_TICKER = ""
@@ -124,11 +122,7 @@ function getOrders ()
     local orders = {}
     -- Oil
     local oil_amt = table.remove(peripheral.call(OIL_TANK, "tanks"))
-    if oil_amt == nil then
-        oil_amt = 0
-    else
-        oil_amt = oil_amt.amount
-    end
+    if oil_amt == nil then oil_amt = 0 end
     local oil_needed = OIL_SETPOINT - oil_amt
     if oil_needed > 0 then orders.oil = oil_needed end
     -- Biomass
@@ -140,11 +134,7 @@ function getOrders ()
     -- Biofuel
     -- TODO use up excess material?
     local biofuel_amt = table.remove(peripheral.call(FUEL_TANK, "tanks"))
-    if biofuel_amt == nil then
-        biofuel_amt = 0
-    else
-        biofuel_amt = biofuel_amt.amount
-    end
+    if biofuel_amt == nil then biofuel_amt = 0 end
     local biofuel_needed = BIOFUEL_SETPOINT - biofuel_amt
     if biofuel_needed > 0 then orders.biofuel = biofuel_needed end
     return orders