I would suggest a good quality wheel bearing grease. The nastier and stickier the better.
UH

Try "Flamingo Grease." Nasty, Sticky and Pink!
Made for boat trailer wheel bearings that dip into salt water in the Florida Keys.
Used it on my Blaink L-23 fittings when I had Miami Gliders and now at Marfa Gliders in southwest Texas since 2001 (where I traded rust for dust.)
Find something similar - nasty and sticky (and pink) - perhaps in a marine supply store.

Note the Blank L-23 horizontal T-tail stabilizer is very hard to remove after an outlanding or approaching storm if the pins have not been cleaned and greased every 3 months. Changed to "Flamingo Grease" and it slid off (forward) without using the expletive deleted words, a rubber mallet and wooden dowel. Mallets and hammers on aircraft are not recommended!