thanks for the tip lol
on the crankshaft if i put ONLY the circlip and the ''metal/brass cylinder'' (inside the second gear clutch)
well that leaves only like 0.5mm to grind.
Chris Paz was right about removing the washer after the circlip, it helps about 1mm. still 0,5mm of that piece above the shoulder.
So you were kinda right for this. I can gring like 0,25mm on each side and that should work! It won't be enough to make anything hit the second gear! can't wait to try this.