I've got a 1981 Honda CM400E and I can't get it running right! What it does: It runs fine at low and high rpms, but in mid rpm's it misses. If I shut the bike off and don't turn the petcock off, the right carb overflows. It also gets hot really fast. What I have done: Cleaned the carbs, changed spark plugs and gapped them properly. What I will be doing: Rebuilding the carbs, clean the gas tank, try and figure out why it doesn't run right! Any help would be greatly appreciated!