I have read just about jet post but have not seen one similar to mine. I have a 07 drz- s converted to sm (17 wheels)ect I do not have a Idle mixture screw on my mukuni 29fc carb (stock) I have 3 jets a 142.5 main 62.5 ? 22.5 pilot It misses at idle. and a quick braap. will kill it. It also stalls at idle sometimes. pops A lot at decell. it is slow to take off and slow all the way up. I have changed sprockets. 4 times now 16/40 now and it will not go over 80 mph. level ground. 200 lb rider........ I bought it new. and it has 2000 hard miles on it now. and it getting worse. I ride from sea level to 3500 ft regularly. any suggestions on a first swap on the (3) jets??????