I've jus went through two sets and I've learned the hard way jump on the net orderd only k and l rebuild kits that come with both primary and main jets 4 cut off valve kits separately reuse your solid floats and unless u r n the kno about unclogging soaking and separating and re assembling I would recommend the McGregor carb rebuild svc pdf down load it is a lifesaver my carbs on my 79 cb750k didnt even get a resync jusvtweaktbthe idle mix and idle speed and my bike ran like a top this dude is good but I made sure I followed his directions very closely hope this helps also randdacks cycle shack and babbits honda can hookm u up with new fuel tube o ring kits