XO-1 spur-to-pinion adapter that includes the "Cush Drive"?

[Lizard]

From what I know, 2.5mm is the right holesize for an M3 thread.

Is the tap high quality? If it took a high quality drill to make a hole, maybe the Traxxas material is just too hard and/or brittle?

You could try some very high quality taps (those with 3 different ones that have to be used after another) but that's gonna be expensive and probably not worth it given the uncertain outcome.

Crap. Sorry that it didnt work out.