Forgot to update this thread.
In the end I went for a ZCI 22tpa motor, quite slow but the semi cycle time on a 11.1 is good.
The gearbox shell, though is utter shit, or the motor is, or the grip, I can't figure it out -.-
I can't properly shim it, I did the good ol' spur first but the bevel wants to sit really high.
Tried bevel to pinion, the bevel now has zero shims on top yet it appears to be too tight, moreover the ZCI motor is really pushing against the bevel even with the grip adjustment screw completely removed.
I thought it was the gearbox shell being a bit shit, so I bought an 8mm one but the bearings I got (SHS) must've been a friday night job and they don't spin -.- stayed up until 2 AM last night to try and figure out what was going on and I'm really pissed.
I'll see if I can pick up a set of decent bushings later today and try again -.-