diff --git a/oregen-manager.lua b/oregen-manager.lua
index aa75535..416d82c 100644
--- a/oregen-manager.lua
+++ b/oregen-manager.lua
@@ -26,7 +26,12 @@ local GLOBAL_LIMS = {
     upper = 10 * 64,
 }
 
-local LIMIT_EXCEPTIONS = {}
+local LIMIT_EXCEPTIONS = {
+    ["create:cinder_flour"] = {
+        lower = 64,
+        upper = 2 * 64,
+    },
+}
 
 -- if these exist, they will be used up
 local PRODUCTS = {
@@ -72,8 +77,8 @@ local RECIPES = {
     },
     ["minecraft:netherrack"] = {
         ingredients = {
-            {"create:cinder_flour", 63},
-            {"minecraft:cobblestone", 63},
+            {"create:cinder_flour", 64},
+            {"minecraft:cobblestone", 64},
         },
         addr = MIXER_ADDR,
     },