I was about to reach out directly to @kortopates for this... but then thought the group might benefit as well. https://savvyanalysis.com/flight/2798708/fee85897-96ba-4acb-9988-9e584fa5af1a Notice the CHT's for #'s 3 and 4. Once in cruise, the temps on those two cylinders are up and down like a whore's drawers.  Any idea why that might be? Does this indicate imminent jug failure or just a loose probe?