I need some real help here on a problem that is probably a little vague. Near the end of last summer I had a bunch of work done on my bike, new air filter, new plugs and wires, carbs cleaned and tuned, pilot screws adjested. Basically, at the end of last season it was running well with no problems. Now that I'm getting it ready for another season I have trouble keeping it running. I can start it no problem with the choke on, and it'll run for a long time, but it just dies when i take off the choke even when the engine is plenty warm. I did a vacuum test on the carbs and they were out of synch, but I can't synch them at idle because the engine won't idle without the choke on. I know that by now I have made the problem worse by trying to synch the carbs and set the idle, but any help would be so greatly appreciated. Shops can be so condescending to the guy who likes to do his own work. Thanks a ton dudes.