i got a 350 chevy from a 1980 pickup looks like it was rebuilt a while ago problem is my endgap for the top rig is about .035 that seems like too big of a gap to me im using the old rings to get that measurment there is no ridge at all on the top of any of the cylinders does .035 seem out of range? if it does could i get a set of file fit piston rings and use them or should i bore the motor out im hoping that i wont have to do that cause the pistons that were in there seem to be in good shape and not wore down,thanks for any input,steve