Hey there everyone... I have been having problems with my Kawasaki 650. It is carburetted. I originally got it a few months ago. It has always had a cold start problem and didn't want to fire until cranking and working the throttle a few times. I heard it was a simple valve adjustment. So I adjusted the valves at .005 intake and .008 exhaust. After doing that it would not fire at all not even with starting fluid. I finally managed to get it to start and run but it is sluggish and not as snappy as it was. It only tops out at about 30mph. I have cleaned the carbs thoroughly thinking I've might of got dirt in there while doing the valve. I have rechecked everything about 3-4 times. The only thing I haven't done is a carb sync. Any suggestions?