The metal washers were replaced by seadoo in all models in 2008. You could change them yourself for a fraction of the price, with a manual in the seadooforum library...see post #2 it's like $10.95 get the manual than cancel it after 1 month...I haven't found a manual any cheaper. I bought a Paper seadoo manual from a seadoo dealer, cost me $80.00 USD, because I wanted to have it boat specific for my boat, and it wasn't loaded in the seadooforum library yet because it is a 08 model.
We'll be here to walk you through it if you get in a bind, if you decide to repair it yourself.
Karl