Been waiting for Laconia Bike Week to start and just after getting up there this past Sunday the engine developed a NEW noise, figures. Loud rapping from front cylinder when cold. To loud to continue using it so I took it on in to Harley with 4days left on the warranty. New cylinder kit front and back being installed all under warranty. Claim is carbon buildup and front cylinder out of spec. I have my doubts about it being the problem. Anybody run into this before?