diff --git a/tubelib/node_states.lua b/tubelib/node_states.lua
index a300435..aca065a 100644
--- a/tubelib/node_states.lua
+++ b/tubelib/node_states.lua
@@ -57,7 +57,7 @@ local P = minetest.string_to_pos
 local M = minetest.get_meta
 
 
-local AGING_FACTOR = 3  -- defect random factor
+local AGING_FACTOR = 4  -- defect random factor
 
 --
 -- Local States
diff --git a/tubelib_addons3/distributor.lua b/tubelib_addons3/distributor.lua
index 8dd3783..0ae6dac 100644
--- a/tubelib_addons3/distributor.lua
+++ b/tubelib_addons3/distributor.lua
@@ -32,7 +32,7 @@ local State = tubelib.NodeStates:new({
 	infotext_name = "HighPerf Distributor",
 	cycle_time = CYCLE_TIME,
 	standby_ticks = STANDBY_TICKS,
-	aging_factor = 10,
+	aging_factor = 50,
 })
 
 local function formspec(pos, meta)
@@ -197,7 +197,7 @@ local function distributing(pos, meta)
 	-- no filter configured?
 	if next(kvFilterItemNames) == nil then return end
 	
-	local moved_items_total = 0
+	local busy = false
 	local inv = meta:get_inventory()
 	local list = inv:get_list("src")
 		
@@ -222,7 +222,7 @@ local function distributing(pos, meta)
 				stack:set_count(0)
 				local color = Side2Color[side]
 				counter[color] = counter[color] + num
-				moved_items_total = moved_items_total + num
+				busy = true
 			else
 				second_try = true  -- port blocked
 			end
@@ -238,7 +238,7 @@ local function distributing(pos, meta)
 					stack:set_count(0)
 					local color = Side2Color[side]
 					counter[color] = counter[color] + num
-					moved_items_total = moved_items_total + num
+					busy = true
 				end
 			end
 		end
@@ -246,8 +246,8 @@ local function distributing(pos, meta)
 	inv:set_list("src", list)
 				
 	meta:set_string("item_counter", minetest.serialize(counter))
-	if moved_items_total > 0 then
-		State:keep_running(pos, meta, COUNTDOWN_TICKS, moved_items_total)
+	if busy then
+		State:keep_running(pos, meta, COUNTDOWN_TICKS, 1)
 	else
 		State:idle(pos, meta)
 	end
diff --git a/tubelib_addons3/pusher.lua b/tubelib_addons3/pusher.lua
index 0d9ec33..7f18514 100644
--- a/tubelib_addons3/pusher.lua
+++ b/tubelib_addons3/pusher.lua
@@ -31,7 +31,7 @@ local State = tubelib.NodeStates:new({
 	cycle_time = CYCLE_TIME,
 	standby_ticks = STANDBY_TICKS,
 	has_item_meter = true,
-	aging_factor = 60,
+	aging_factor = 50,
 })
 
 local function pushing(pos, meta)
@@ -44,7 +44,7 @@ local function pushing(pos, meta)
 			State:blocked(pos, meta)
 			return
 		end
-		State:keep_running(pos, meta, COUNTDOWN_TICKS, items:get_count())
+		State:keep_running(pos, meta, COUNTDOWN_TICKS, 1)
 		return
 	end
 	State:idle(pos, meta)
diff --git a/tubelib_addons3/pushing_chest.lua b/tubelib_addons3/pushing_chest.lua
index 67b8aa9..5afcfb7 100644
--- a/tubelib_addons3/pushing_chest.lua
+++ b/tubelib_addons3/pushing_chest.lua
@@ -15,8 +15,8 @@
 ]]--
 
 -- tubelib aging feature
-local AGING_LEVEL1 = 80 * tubelib.machine_aging_value
-local AGING_LEVEL2 = 240 * tubelib.machine_aging_value
+local AGING_LEVEL1 = 50 * tubelib.machine_aging_value
+local AGING_LEVEL2 = 150 * tubelib.machine_aging_value
 
 local Cache = {}
 
@@ -48,10 +48,10 @@ local function allow_metadata_inventory_move(pos, from_list, from_index, to_list
 	return count
 end	
 
-local function aging(pos, meta, num)
-	local cnt = meta:get_int("tubelib_aging") + num
+local function aging(pos, meta)
+	local cnt = meta:get_int("tubelib_aging") + 1
 	meta:set_int("tubelib_aging", cnt)
-	if cnt > AGING_LEVEL1 and math.random(AGING_LEVEL2/num) == 1 then
+	if cnt > AGING_LEVEL1 and math.random(AGING_LEVEL2) == 1 then
 		minetest.get_node_timer(pos):stop()
 		local node = minetest.get_node(pos)
 		node.name = "tubelib_addons3:pushing_chest_defect"
@@ -97,7 +97,7 @@ local function shift_items(pos, elapsed)
 					stack = inv:get_stack("shift", idx)
 					stack:take_item(num)
 					inv:set_stack("shift", idx, stack)
-					aging(pos, meta, num)
+					aging(pos, meta)
 					return true
 				else
 					set_state(meta, "blocked")