I'm at about 2600 miles spread over 3 years on the rebuild. I'm ready to live and let live with the valves for a while to see if they break-in some more. It's the intermittent, rough, "5- cylinder" performance issue that has me concerned now. When the engine is running well it has plenty of power. When it starts running rough, I have to downshift the transmission just to climb a small hill and it sounds like I've lost a cylinder. That yellow spark from wires to plugs yesterday looked unhealthy to me. I suppose that I could start changing out electrical components one at a time and watch for an improvement.

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