i have a 2003 yamaha blaster with stock mikuni carb, boyesen reeds, fmf fatty with powercore2 and i have the lid removed with kandn filter, outerwears cover with stock airbox i currently have a 32.5 pilot jet and 260 with stock needle but my plug is a light/dark gray which is lean what jet size do i need to go up to i would like to start at a close size i have 260-290 main jets now i really wanted to try to jet the bike close to perfect without doing a plug chop now beacause i am rebuilding the topend this week and i dont want to run it wide open now for a plug chop. my elevation is 400 to 1200 because i ride differnt areas . thanks.