+1 on RSC. I have the "bearing" on the WR. Had the "bushing" on a previous KLR. Now am waiting for the "bearing" for a new-to-me KLR.
I ride about 5-8K a year. I only clean the clutch 1x a year. I may be wrong though. Oh well ... still a great product.
Best ... Raymond
PS. Have had no reason to use the spacer.