Hi Scott;
I suggest that you get your mechanic to do the same checks and, if necessary adjustments I spelled out in my first response to this thread. Make sure the fuel flows are set up in accordance with the engine maintenance manual, replace all spark plugs with greater than 5,000 ohms internal resistance, and make sure the fuel injection nozzles are clean.
If you have GAMI nozzles installed they must be installed in the proper cylinder--they can't be swapped from one cylinder to an other.
If you don't have GAMI nozzles, you can swap the FI nozzle from the hot cylinder to one that cooler and see if the "hot" follows the nozzle. The high temps might be nozzle related.
I suggest to go to the GAMI website (www.GAMI.com) and do the Lean Find test to determine what the EGT spread is on your cylinders/nozzles. It it's out of what GAMI suggests, the next step would be to get a set of GAMI nozzles for your engine.
Please let me know what you find.

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I have a T210 as well. #5 runs consistently hot, and it's nearly impossible to run at 8000 feet with 2500/30" and get the temps down below 410.

I'm curious if anyone has a recommendation for someone who can look at and fix the baffling. We're based in Houston, but travel a lot in the plane so taking it someplace isn't a big problem.

Thanks,
Scott

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