@kurtis500 No offense taken. I'm a desk jockey but do a decent job mechanically. Learning more each year. Yes, when I "tightened the prop" and removed the key. I then put the prop up on the shaft and marked where it was. I then installed the key, push the prop on as far is it could go, and then used a new nut to tighten it up to it's mark. I may remove it again to play it safe just to check.
I'm still looking for an answer on the drive damper? Anyone, think I can rule that out?