I'm replacing the fork seals on a 94 L. I noticed someone has installed a 1.3 inch (crooked) piece of PVC pipe on top of the spring to shim it. Checking the manual and schematics I don't see a stock shim availabe, just the spring seat and thats it. Whats the deal? Are the springs on a 650R shimmed with a bushing? Also, whats a good method to remove the dust seal?