Good news,The 5200 worked very well and is holding fast.Looks like original fit.I left the clamps on for about a week to fully cure.Not so much as a creek when clamps were undone.5200 is amazing stuff!
Don't get to fond of it. It can be miserable stuff if you ever have to remove a piece of hardware that was bonded with that stuff.
I usually use 3-M 4000 when I can find it or 3-M 4200 for metal or wood bonded to fiberglass. For plastic deck plates, port lights, and hatches, I use Dow Corning 795.
I used BoatLife Boat Caulk the other day to seal my galley pump faucet next to my sink. The 4200 is just a little too strong for that particular application. Last year I used 3-4200 for it and I ripped out a little veneer from the board in the back of my sink trying to remove this galley pump.