Last summer I put a fmf knarly woods pipe and powercore 2 silencer on my 03 kdx 220. The only modification I made was removing the airbox snorkel and it worked perfectly. This winter I did a top end job had the cylinder replated and installed a new wiseco piston and rings. I did the break in and on my first ride out were I pressed the bike a bit and it ran SUPER hot to the point of discoloring the pipe a good 6 inches out from the exhaust port. should I be looking at changing the jetting or running a richer gas mixture currently 32:1. Any other suggestions greatly appreciated. I live in Ct and it was only 40-50 degrees this weekedn. Any help would be appreciated.