Took my 2008 GSA (62,000 miles) into a dealership for some engine work, they changed the final drive fluid along with all the other fluids. Mechanic said there was a slight "glitter" in the fluid and recommended the final drive be rebuilt, ($1,400.00 USD) and I admit I am a little skeptical. Mechanic said nothing about checking for any play in the rear tire, and i certainly haven't felt any vibrations from the rear wheel. He said since the fluid was slightly shiny and bright (he said he was going to save the fluid to show me but forgot)and since it was shiny it was pieces of bearing, rather than the normal gear wear. Also irritated as when the dealership contacted me with the news they informed me my rear bearing was locking up and i needed to have the final drive rebuilt. I rode the bike into the dealership.