Your supposed to cut the spacer to take up some of the slack.
I didnt do this the first time and it moved a lot. I recently added the spacer and its all but stopped.

SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq NEW: 19 Goldwing Tour DCT