diff --git a/releasenotes.md b/releasenotes.md
index e078e78..8ef4151 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -1,6 +1,19 @@
 # Release Notes for ModPack TechPack [techpack]
 
 
+## V2.03.03 (2019-05-22)
+
+### Additions
+
+### Removals
+
+### Changes
+
+### Fixes
+- Bug fixes from obl3pplifp (Blocky Survival) (issues #27, #28)
+- Unstackable items vanish when using HighPerf pushers (issue #29)
+
+
 ## V2.03.02 (2019-05-09)
 
 ### Additions
diff --git a/tubelib/command.lua b/tubelib/command.lua
index 53ca7bb..6ded477 100644
--- a/tubelib/command.lua
+++ b/tubelib/command.lua
@@ -472,9 +472,9 @@ end
 function tubelib.get_stack(meta, listname)
 	local inv = meta:get_inventory()
 	local item = tubelib.get_item(meta, listname)
-	if item and inv:contains_item(listname, item) then
+	if item and item:get_stack_max() > 1 and inv:contains_item(listname, item) then
 		-- try to remove a complete stack
-		item:set_count(98)
+		item:set_count(math.min(98, item:get_stack_max() - 1))
 		local taken = inv:remove_item(listname, item)
 		-- add the already removed
 		taken:set_count(taken:get_count() + 1)