Maybe 100, Comp feels good, a worn ring wouldn't explain the can't shut it off. If my other 1.60 runs ok I'm going to swap them out and see if it's in the engine. I believe it is.

This was a sudden problem. One flight to the next. Thinking about it the last good flight I did hear it sag once in a vertical. It was the last flight of the day so I didn't think anything of it.