GH hobby aluminium differential gearbox

Yeah I should have checked before purchasing. Or ordered the FLM bulks, but I ordered from towerhobbies and they didn't have any in stock. (I live in Norway, so customs along with shipping price is a pain in the ass.)

Checked the dimensions on the bearings, and ordered some. 10x15x4 and 8x16x5.

But now I stumbled onto another problem. The diff bevel gear doesn't want to sit still, and it seems to move too close onto the diff gears and too close to the diffhousing, if you know what I mean? Then the diff won't move properly. And this with the original bulkhouse. Hopefully it will work out with the new diffhouse and bearings, but would be nice to fix now.

BTW, are the diffs themselves identical in size across the models?