It's been a long time since I had much machine shop work done, so please lend me your experience. The meta-question is whether to have my 1500 head rebuilt or just buy one already done. I know magnaflux is around $100 here, plus it will then need new valves, hardened seats and guides. If I'm looking north of $500, it seems easier and faster just to pay a little more and buy one already done (maybe an early B.) Thoughts are appreciated.