Originally Posted by JRX-S Bill
All chassis need to be cut for the new bulkhead.
Dremel tools are just a few pages back. Posted by HarshGuy.
Yep they all have to be cut, the stock and 2.4 only at 1 depth -- for the motor only (the 2.4 obviously less than the stock 2.9), the 4mm at two depths, one for the countersink of the bulkhead, one for the motor. I've cut 6 chassis (2 - 4 mm, 2 - 2.9 stock and 2 - 2.4) and the bit looks all purple and nasty, but still seems to work fine on the last 2.4 I cut.