I took my 426 out for it's first real ride since I bought it a week ago and had a strange experience about 15 minutes into it. The bike was running great from the start, but when it reached what I believe to be running temp it started to sputter and backfire a bit with a loss of power. I checked to make sure that the choke hadn't moved out since that was what it was acting like and that wasn't the problem. Out of trial and error diagnostics I opened the remote hot start and the darn thing ran like a champ for the rest of the ride as long as I kept it open. Is this a jetting issue? Or maybe a fuel screw adjustment issue? HELP!!!!!!!!!!!