>>390733448
>bone size .0004 was the same as .04
But the bone size being different sounds like you and the original author uses different scales for export.
Your FBX should show 1m to 1m for importing FBX into unity, since you're using the correct scaling.
But if the original prefab has something like this 1cm to 0.01m, that means you need to match the scaling for the FBX to work correctly in the prefab, in which case you'd swap the scaling settings.