AFR misleading? Plugs tell a better story?

The bottom end condition is unknown. Car ran fine when i bought it. Not a hint of any oil smoke. Then issues with heads. Just changed rear seal, it was the original rope type. The rear main bearing looked good to me. I checked with plasti gauge. Well within specs, but I’m far from any builder.

Ya know I had a weird reading on a cylinder, I thought it was just me. Went right up to 170, then on recheck it only went up to lower 150’s. I’ll have to look it was for sure on odd number drivers side.

Edit: ok I looked, can’t tell looking at my chicken scratch writing. Pretty sure it wasn’t 1 & 7