LOL. Ah, just learning about LOP. Isn't that where you lean to the last cylinder to peak and then trash all the others? My engineer will shoot me if i try any LOP tricks. But seriously I keep my o540 CHTs to 380/390F and she flies bang on the POH for Fuel flow and speed. As the engine is 30 years old I consider myself very lucky. I swear by my EDM. A miraculous bit of kit. It's a damn sight more useful than the mode s I've just bought.