Sound like its probably got a chrome bore. Ive got a 137cc stihl chainsaw with a chrome bore, there wear very little.
I gave my powertorque a hone by hand/fingers today with some really fine sandpaper. Not perfect i know.
By the way check in the bore just above the exhaust port, there should be a small section grooved out leading into the exhaust port. Mine was completely carboned up and i nearly didn't notice it.
cheers
matt
cheers
matt
