HI Germain! Nice to see you again. Yes, I'm happy with the shims. Very nervous putting it together...but I got through it (version 1.0 with the homemade ABS paste). Hopefully as I lose the gut and then cut them off.
Yes, my Scootch helmet has 8 teeth. Nothing I can do about that now. At the time when I build the helmet, I did not know the difference between "stunt" and "hero". When I get another kit, I'll aim for matching the right Hero style. For now, I'm aiming for the first step which is basic approval.