Found out my head had at least one cracked valve guide. So I order'd a used one from a seller in AZ. Also found out I need what is called a piston jet? Not for sure what it does, but looks like it's a oilier for the piston, if so why isn't there one on each side of the case? Part should be getting here soon. Then I have to get it and the newly used head back down south. Recently the motor was removed from frame. Case split, cleaned, crank removed. And the new +3mm Hot Rod stroker installed and case back together, awaiting the jet, and head assemble. I know valve guides can be replaced, but my head also lbts, So instead of buying all new guides for $30.00 each, I just purchased the used one for $150.00 +freight. It included the valve cover, rockers, springs, valves, CP piston, new wrist pin and new top end gasket kit!