OK matt, that sounds good. I understand you not wanting to worry about the valve guides until you have no choice. Did your father make his mandrel for recutting the seats of that engine's valves, or did he get one from Warren and Brown back when they still made them? I have 10 cutters, but only one "official" mandrel, in an old car engine stem size. To cut seats, I have to turn up a mandrel on the lathe.
I think 13 cubic inches is below the minimum size for synchro balance models, so I'm not surprised yours doesn't have that mechanism.
