Thank you - the thought of running leaner than what gives peak EGT is a scary concept to me, probably because I'm used to the car world where positive boost and running lean is a huge no-no. The ~4 hours of Mooney M20 with O320 training taught me to lean until the single EGT gauge was about 100 degrees richer than a red line marked on the gauge during climbs and I could get close to that red line during cruise (but the engine would run rough before hitting it). In Cessnas, I was taught to lean until the engine RPMs started to decrease, then richen a tiny bit.
I understand that with a Rajay turbo on the M20F, it's only supposed to be used to bring the MP back to ~25 inches when I'm at altitude, so theoretically, I could run the same mixture settings if I were at a naturally aspirated 25 inches.