Hi,
Team C gear diffs arrived. It is not necessary to dremel the gear case, only must be shimmed correctly. To achieve the 2,8mm you can use a 850 ball bearing (the one used in the ball diff) plus 0.3mm shim.
I can't test the car until I buy the gear silicone (I think 7k or 6k front diff and 3k or 2k rear diff -outdoor track-) and the front and rear Team C CVD.
Best regards