I used that screw driver for criclip ;-)
The case came apart just by pulling on the top half.
The gears are looking good, forks too, im happy.
The only thing i didnt like that munch is my crank... I think the bearings have some play....
I put a new 4mill crank anyway.
Yes i will do some mods on the tranny. Pancake bearings, shift star etc....
Finaly, like Bennett said, we are working 90% of the time in imperial units. Probably 'cause of you Muricans!