When I fired up the bike the other day, it wasn't hitting on the right cylinder at idle but ran fine when the throttle was opened so back out came the carb to reclean the slow jets which solved the problem. I took the bike for a short test run and the throttle would run on when backing off the gas and settle down after a few seconds. The throttle plates aren't the issue. I read somewhere what causes this once but can't find it now. Anybody able to point me in the right direction on this?