I own 2 of the 2001 Trail Boss 325s. Neither of them idle very well. I had someone work on one of them, becuase the battery had been hooked up to a battery charger wrong, and smoked the headlamp, buld and numerous other components. I runs again now, but if you touch the handle bar, it shuts off. Can anyone advise me on thiss? Should I replace the thumb paddle ? Also have these machines had lots of problems with idling?