I purchased a new '05 Yamaha Grizzly in April and I've added a K&N air filter and recently bought an after-market Big Gun pipe. My question to you gurus is what size jet's do I need? Is the 175 the stock size? I know I can order the needles for much less individually rather than purchasing the jet kit. FYI, I'm running 26" mudlites and live in Kansas. Thanks!