I recently replaced my 73 with a different dual port enginge. For some reason the right side is running very hot. Within one min the right side pipes (passenger side) are burning hot while the left side remain cool to the touch. The oil feels cool still and there are no obstructions in the fan housing. I removed the diverter blades to make sure they were not staying closed. The gererator belt is tight and the fan seems at full speed. Never had this type of problem that seems to be affecting just one side. Don't know wher to look next. Any suggestions?