Tracy - do a quick search on those gear tower bolts. There is a lot of good info and suggestions for dealing with them. Re torque all of the bolts, not just the An3's. That's not a loose bolt, that's an almost falling out bolt! They are all suspect in my opinion.
While your at it, I would get in there with cue tips or whatever and clean up the weldments so you can inspect for cracks, etc....