make little threads on shim by using sand paper but dont sand it going up and down sand it side 2 side so your crows will not move up
you have SCS greg, use it
I think I had the same problem win my new crows. I found the shim rad supplied was 5/8 an inch taller then my previous hic shim so I marked it and cut it down. Worked perfectly now. Not sure why they made it so long... I couldn't even get the threads started on the top cap.