I put a new Bone saddle on today and the issue is gone. I took the action down a touch and no buzz. The action was super high so maybe the lower action helped somehow.

I think I’m cured of my desire to add the 517. I’ve been playing my 717 so much and I think I finally realize that if I add another guitar it would just steal time from my 717. That, and I really like my Martin as well. Whew, that was CLOSE! Lol