How are the #6 and #8 intake ports and the back side of the intake valves in those ports, are they dry and clean or oily and gummy? work If dry and clean then the exhaust guides and seals are the only items left for possibly oiling those exhaust ports work
Good luck, let us know what you find thumbs

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)