hey, thanks for the info it really brightened up my day thought it might be junk. when i install a heli-coil do you have to remove the head and if so can i find a head gasket for this year motor.how do i trace the # so i can find out what year motor it is? it's a late 50's 7.5 fleetwin evinrude (pressurized tank no fuel pump).thanks for the help. oh by the way i fished in crystal river once on a vacation at my cousins down by the nuclear plant.first and only shark. have a good one.