Lots of good info guys thank you. Still settling in this isn’t going to be a normal annual year and cost a lot more $$$ I don’t have to spare. Oil consumption is up a little from prior years but not bad. Run 20 to 30 hours a year prior to this year. This year about 70 as we are planning on using it more and never missed a beat or acted up. Oil is not burnt looking or smells bad. Changed at 35 hours prior to now and all was normal. No power drop off, no odd running, no odd starting, no drop off in climb or cruise, all normal. If not for low leak down on two cylinders wouldn’t know anything was up. No engine monitor – I know I should have one. Leak down we could not tell where the air was going. Used a borescope, valves all moving so not stuck and look okay. Getting a better camera in a couple of days.
Going to take a step back, big breath and check it over again. See if we can determine where the air is going because it has to go somewhere. Get some better pictures inside and go from there. A&P is getting up there in age and is reluctant to get into a cylinder replacement. If it goes that direction, might have to find some more options locally.