Originally Posted by
darkhorse75
Shell is 68mm. Crank is designed for 73mm shell. Spacers are 2.5mm. (73-68)/2.5=2. Use 2 spacers.
The 73mm setting uses one spacer. For 68mm you need 2+1=3 spacers.
Set the preload, tighten the pinch bolt and then check if anything is loose.