dial-a-jets
have a dual setup on a mxz 600, with the ufo's, works good, and highly recommend. My application may not need duallies, but they work great lots of adjustment. Ride from 2000' to 8700' in mountain terrain,stuck a few, but having great time. I set one side for flat land riding, with the 2nd on rich side, and as elevation increases lots of room to lean out. find they are very forgiving come down the mtn. Easy to adjust, suggest EGT gauages if you want to lean it out, very responsive, get remote filters to keep passages clean. Draw backs are you still have to adjust, it's easier but.