Originally Posted by
tr1kstanc3
What's the best way to take 1mm off the spec-r gear diff casing? Are you taking .5mm off each L/R side? Somebody mentioned using a truer but I do not have access to one. I have a dremel, sandpaper, and files.

I only shaved down the side that doesn't have the pulley. The pulley already sits close to the bulkhead as is. A dremel with a sanding bit is all you need