Gears fit, but a bit too tight.. perhaps I will print them again, slightly smaller.
On the other hand, the red flange is not flash with scope back end, so the bracket is slanted and motor shaft is moved towards big focuser gear...perhaps 2x 0.5 mm spacers and longer screws will help here.
Anyway, not bad at all for first iteration
EDIT:
With washers under the bracket, gears fit perfectly (as much as plastic can...).