diff --git a/tubelib_addons3/chest.lua b/tubelib_addons3/chest.lua
index 8d075fc..ed6910c 100644
--- a/tubelib_addons3/chest.lua
+++ b/tubelib_addons3/chest.lua
@@ -151,7 +151,14 @@ tubelib.register_node("tubelib_addons3:chest", {}, {
 	end,
 	on_push_item = function(pos, side, item)
 		local meta = minetest.get_meta(pos)
-		return tubelib.put_item(meta, "main", item)
+		local res = tubelib.put_item(meta, "main", item)
+		if res == false then
+			local inv = meta:get_inventory()
+			local leftover = inv:add_item("main", item)
+			item:set_count(leftover:get_count())
+			return false
+		end
+		return true
 	end,
 	on_unpull_item = function(pos, side, item)
 		local meta = minetest.get_meta(pos)
diff --git a/tubelib_addons3/pusher.lua b/tubelib_addons3/pusher.lua
index bb6e9b1..cc4979a 100644
--- a/tubelib_addons3/pusher.lua
+++ b/tubelib_addons3/pusher.lua
@@ -42,11 +42,15 @@ local function pushing(pos, meta)
 	local player_name = meta:get_string("player_name")
 	local items = tubelib.pull_stack(pos, "L", player_name)
 	if items ~= nil then
+		local count = items:get_count()
 		if tubelib.push_items(pos, "R", items, player_name) == false then
 			-- place item back
 			tubelib.unpull_items(pos, "L", items, player_name)
-			State:blocked(pos, meta)
-			return
+			-- Complete stack rejected
+			if count == items:get_count() then
+				State:blocked(pos, meta)
+				return
+			end
 		end
 		if State.get_state(pos, meta) ~= tubelib.STOPPED then
 			State:keep_running(pos, meta, COUNTDOWN_TICKS, 1)