diff --git a/changelog.txt b/changelog.txt
index 6324346..281e4cf 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -3,6 +3,7 @@ Version: 2.1.10
 Date: 2025-05-03
   Changes:
     - Fix load issue with bob's
+    - K2 updated compatibility, thanks to autechr3 and pla
 ---------------------------------------------------------------------------------------------------
 Version: 2.1.9
 Date: 2025-04-20
diff --git a/data-util.lua b/data-util.lua
index d57f071..29ebf26 100644
--- a/data-util.lua
+++ b/data-util.lua
@@ -115,12 +115,9 @@ function util.fe_plus(sub)
   end
 end
 
-function util.get_stack_size(default) 
-  if mods.Krastorio2 then
-    local size = get_setting("kr-stack-size")
-    if size and tonumber(size) then
-      return tonumber(size)
-    end
+function util.get_stack_size(default)
+  if mods.Krastorio2 and kr_adjust_stack_sizes then
+    return tonumber(200)
   end
   return default
 end
@@ -514,14 +511,11 @@ end
 
 -- k2 matter 
 -- params: {k2matter}, k2baseicon , {icon}
-function util.k2matter(params, only_deconversion)
+function util.k2matter(params)
   local matter = require("__Krastorio2__/prototypes/libraries/matter")
   if mods["space-exploration"] then 
     params.k2matter.needs_stabilizer = true
   end
-  if not params.k2matter.material.amount then
-    params.k2matter.material.amount = 10
-  end
   if not data.raw.technology[params.k2matter.unlocked_by] then
     local icon = ""
     if params.k2baseicon then
@@ -543,7 +537,6 @@ function util.k2matter(params, only_deconversion)
               },
               params.icon,
             },
-            effects = {},
             prerequisites = {"kr-matter-processing"},
             unit =
             {
@@ -566,11 +559,12 @@ function util.k2matter(params, only_deconversion)
               },
               time = 45,
             },
+            effects = {}
             -- (ignore for now) localised_name = {"technology-name.k2-conversion", {"item-name."..params.k2matter.item_name}},
           },
         })
   end
-  if only_deconversion then
+  if params.k2matter.only_deconversion then
     matter.make_deconversion_recipe(params.k2matter)
   else
     matter.make_recipes(params.k2matter)
@@ -681,7 +675,7 @@ function util.se_matter(params)
                 {"se-astronomic-science-pack-4", 1},
                 {"se-energy-science-pack-4", 1},
                 {"se-material-science-pack-4", 1},
-                {"kr-matter-tech-card", 1},
+                {"matter-tech-card", 1},
                 {"se-deep-space-science-pack-1", 1},
               }
               
diff --git a/zircon-matter.lua b/zircon-matter.lua
index c09f108..b8b6b5a 100644
--- a/zircon-matter.lua
+++ b/zircon-matter.lua
@@ -6,7 +6,8 @@ if mods["Krastorio2"] then
     k2matter = {
       material = {
         name = "zircon",
-        type = "item"
+        type = "item",
+        amount = 10,
       },
       matter_count = 6,
       energy_required = 1,
@@ -27,6 +28,7 @@ if mods["Krastorio2"] then
       matter_count = 10,
       energy_required = 2,
       needs_stabilizer = true,
+      only_deconversion = true,
       unlocked_by = "zirconium-matter-processing",
     },
   }, true)
@@ -36,12 +38,14 @@ if mods["Krastorio2"] then
       material = {
         name = "zirconium-plate",
         type = "item",
+        amount = 10,
       },
       matter_count = 17,
       energy_required = 2,
       needs_stabilizer = true,
+      only_deconversion = true,
       unlocked_by = "zirconium-matter-processing",
     },
-  }, true)
+  })
 
 end