Bill Cook, If you want some tips on working over the KT-17 give me a call one night 937-638-2003, Add an additional coil,use the old K coils, one coil for one cylinder, you can run them off the same set of points. You can radius the bottom of the intake and exhaust valves, a 3 angle job would be best and changing the angle from 45% to 30 degree-all depends how much you want to tear the motor down to do the valve work, SHAVE THE HEAD almost flat, just leave a thumb nail of ridge on the gasket surface. There is some other tricks I have heard of, got a number of a guy in Penn that told me abunch of tricks I want to try myself