Varnish. Pick the old fashion kind with no additives or solvents. Try Le Tonkinoise, the French Navy uses it for rust prevention. Not sticky.

I use Le Tonkinoise varnish. Linseed and tung oil, sets up non-sticky. The French navy uses it. No solvents or nasty ingredients, does not shrink when it dries.

More amps but move faster, try more stickout? You are cooking it.