I have a 1982 Honda cb650 that I cant get to run correctly. So far I have put new rings in, checked the timing, took the carbs apart and cleaned them and replaced the needles and gaskets, and then bench synced them. I also moved the air/fuel adjustment back to factory setting. I have read about how to adjust them, but they say you have to have the bike in idle, which I can't do. I have everything together now and it wont run under 3,000 rpm. It runs very good above that and it very responsive on the throttle. It seems that I have ran out of ideas and could use some help.