I'm over the 75t spur and the slipper eliminator is not my favorite but much better. Caved and bought a couple schelle slippers for my de and ce. I have a bunch of 0.3mm shims and curt at schelle sent me 2 bearings with the slippers. Nice guy! In any event using 5 0.3mm shims (1.5mm ttl). Are these all the shims I need internally? I read some used 1.6mm. Also, any shims needed outside the gearbox? Thx - I'm only a few months racing rc, bought a lot of used stuff, and am not very experienced putting stuff together (yet). Thx!