New bike that is not under warranty anymore is giving me some annoying\nissues. The Ninja forum is starting to ignore my posts because they\ndon't know what is wrong.\n\nI did a 500 mile post-break-in maintenance on it and adjusted the\nvalves. I checked the clearances three times before putting the\ncovers back on and everything was correct as it should be.\n\nMy problem is hanging revs and what seems like very lean running. The\nbike ran GREAT when I got it, then it sat for three weeks, I did the\nvalves, and now it won't run right which pisses me off because I want\nto RIDE IT!!! Difficult to rev up the engine through a huge flat spot\nand it usually tries to stall. Once it does rev up, when you release\nthe throttle, the revs HANG and take about 8-10 seconds to come back\nto idle from about 6-8k RPM.\n\nThe throttle cable is not sticking/binding\nand there are NO vacuum leaks. The boots and carbs are brand new,\nlike I said, and very clean. The carbs are not gummed up anywhere and\nthe float heights are correct. What would cause it to run so lean or\nto have such horrible response to throttle input?\n\nI suppose I could have messed up during the valve adjustment, but that\nbadly? (done valves on many cars, same idea) and how could a botched\nvalve job make my bike run lean (or mimick lean running)\n\nI think it has something to do with these CV carbs the EX250 uses,\nwhich, so far, I think are pieces of crap. Everyone says these bikes\nare reliable, well, mine has been trouble since day one and I can't\neven ride it. My wife has Buell that is faultless. WTF! I would\nappreciate any suggestions.