pinion for 6mm kb motor aksels

[ghostriderlund]

hello there.
i want to throw a kb inrunner 2300kv on a sportswerks mayhem truggy, only thing missing right now is pinions for 6mm kb aksel.. any suggestions on where to get those ?
i got som 5mm pitch 32 pinions but its hardened steel from plettenberg so not sure if they can be drilled..
what have those of you who drive kb 6mm aksels done?
hope to hear some good advices from you guys :)
best regards from denmark