When i pull up to a red light or stop sign Ive noticed my engine is ideling abnormally high and I get the occational back fire out the mufflers when you rev the motor. Has anyone else had this happen to them? Im new to V twins but have been around bikes along time and never seen this before. To me, a high idle would indicate a air leak around the carbs,meaning a lean mixture, but a backfire out the mufflers would indicate a rich mixture in the carbs, How can I get both at the same time?? Could someone help me figure this out?