Any useful insights folks?

Bill, I have seen 3 little holes drilled at 120 degrees around that shaft. Then
with a micro-grease gun, grease is forced into and around the shaft. Works for
a few flights. The alternative is, as you say, to open the wing. I would go
with the above, as you will find an awful mess inside the wing consisting of
rusted spring, rotted off rubber boot and no real fix to your problems. If
memory serves me, there is a brass sleeve in the root rib, which is now too
loose------new oversized shaft? Wait how long for one of those? Pay someone to
open your wing, fix things, close wing.

Honey, where's my micro-grease gun?
JJ Sinclair