shims .. how often?

Are they every major service (12000k's) or less frequent than that ?
was given two quotes from in line motorcycles. $350 for a major without em. $500 - $600 for a major with em.
I assumed they were done by brighton kwaka at 36000, but not so sure now. Docket just says as per manual (which I don't have)
was given two quotes from in line motorcycles. $350 for a major without em. $500 - $600 for a major with em.
I assumed they were done by brighton kwaka at 36000, but not so sure now. Docket just says as per manual (which I don't have)