Vanilla Recipe Override Help

I've got all the other wood types working apart from Birch, it's being picked up within the REI mod though saying the output should be 6. When crafting it gives back 2 like default. It's in the same folder as the rest along with a similar file name etc. What would be causing the override to be negated? Like previously mentioned the other woods are working, just the birch being funky. json { "type": "crafting_shaped", "group": "wooden_trapdoor", "pattern": [ "BBB", "BBB" ], "key": { "B": { "item": "minecraft:birch_planks" } }, "result": { "item": "minecraft:birch_trapdoor", "count": 6 } }