As per the "woodruff key" service bulletin, my fuel mixture screw is set @ 2.5 turns out (done by the dealer). This is with no end cap (also removed by the dealer). If you run an insert what type of adjustment should be made to the fuel mixture screw? It seems that the change in back pressure would make this necessary. I've found an extended screw replacement that will make adjustments much easier but would like to know if anyone has dialed their's in with an insert before I start tinkering with the thing. I can see (hear) that the beast is going to need to be "muffled" a bit before riding in certain places and @ certain events. Otherwise it is going to be unplugged! Trying to get prepared for the quite events! Thanks!