a64- I do have the "Mixture Mizer" single probe egt...the probe is installed on the "hottest" cylinder. It reads a relative temperature, you peak it to a lean setting and then richen back to another cruise setting. It doesn't read any temperatures.

I've not played with a mixture mizer, but if it indicates EGT by any means then it will indicate higher on one mag. Give it a try.

donknee wrote: I've had to clean the screen on my computer several times to clean up the drool after looking at your photos...nice job!
Don

Thanks, Don, for the compliment. Made me smile in my bummed out, longing to fly state.

It's got all new wires and recently cleaned plugs. I visually checked that as soon as I got the cowl off and all looked well. In hindsight, she showed a little "morning sickness" that day, so I think I'll find it has a stuck valve. I'm headed to the hangar later today.

If it just has a deposit it may be cleared by staking the valves, This worked for me on my franklin and it has been good since then.

P.S. the valves don't like Hinze 57