Hey all, I am looking at getting a new muffler and K&N air filter for my GS500F. From my reading of the gstwins forum, rejetting is needed (they run lean anyway). The jet kits can be bought for well under $100 on eBay and the like. I have seen the guides, but I am thinking it is beyond my abilities. Is there somewhere around Melbourne or even a member that can offer this service at a reasonable price?