We should start a tips and tricks for GB builds
I’ll start with my favourite two and something’s I’ve noticed.
If your trigger keeps popping out due to the spring tension, just glue a tiny piece of sand paper to the trigger at the rear where it contacts the box
Same issue with the anti reverse mechanism?
Don’t buy a fancy tool just use any sort of clip lying around, mines from a soldering station tool.
SHS pinion (L) seems to have fatter teeth than say ZCI or ASG pinions®.
If your struggling with bevel to pinion shimming you can use the smaller tooth pinion for more play or the other way around.