All of a sudden, lose the left cylinder....plug good, nice blue spark, must be carbs. Removed left carb bowl, removed jet, and a little brass bushing fell out...Removed carbs, compared to right carb, yep, that's where it goes. Plopped bushing back into needle hole (must be some kind of needle guide), re-installed carbs, running fine so far....may have to apply some kind of adhesive if it keeps falling out....Anyone else experience this or have a fix?....2005 America, 56,000 miles...