50T spur does not fit

[wallot]

Just started to put new slipperential for my friends RC8T and looks like the 50T spur is not machined properly as the teflon insert does not ift (well it does with some brte force) but then the gear does not fit onto the diff cup.

I did check the gear with caliper and internal diameter differs by 0.1-0.3mm if I go around the spur.

can I fix it with bit of dremeling or should I ask Mike for replacement as I know i wont be able to dremel it exatly to the tenth of the milimeter and it will wobble?

My existing 46T spur does fit nicelly.

Bad day. first the RX8 now the spur.