TRF511 + Vector X12 - Pinion doesn't reach Spur?

[djmcnz]

Hi all,

Am building my TRF511 and have a new X12 to install. It's obvious that the pinion wont reach the spur gear when install properly on the motor shaft... it's perhaps 5mm or 6mm short. Motor shaft is typical length.

Is it a property of this chassis design that long pinions are required? The kit pinion is long enough to reach but it's a big pinion.

Do I need to shelf my existing pinions and get special longer ones for this kit? If so, any recommendations? Am currently using RR hardened pinions.

Thanks in anticipation!