Gene, you may want to ask Andy Low of Electrodynamics about that ECU. He's the original builder and a great guy, always a pleasure to deal with. He may be able to refurb the ECU or sell you a refurbed one quickly. And there is another issue that comes to mind: a huge batch of early ECUs had funky connectors (actually an intermittent connection where the wires met the connector). Its the connector that is the same as an Apple's connector, the one that the ground data terminal plugs into, on the airframe side. I had at least two of them that got goofy. Plug the whole set up in, turn the power on and wiggle the hell out of that connection and see if you get an intermittent display, or it may even make the temp go intermittent. Any way, talk to Andy. He's the man when it comes to that ECU.