Pat.....The hub on this prop was "compressed" a little from the prop washer but all my wood props do that over time. I dont think I am overtightening but I will probably look into either borrowing or buying a decent small torque wrench to get a "feel" for 40"/lbs. There may have been some "ground nicks" over the years with this prop in question as well. It was probably a combination of things that finally said enough is enough....lol. I'm just glad I noticed the "change in the air" when it happened and got it down quickly with no real damage.

Thanks,
Steve