only had a couple come loose,,,handle right in hard, wedge on the diagonal , test, then, a few drops of oil (linseed or machine), some taps and trim...
the oil in dry climates slows the shinking of the timber, and the handle coming loose, ...dont know about soaking before you fit and wedge...i thought better after, to help lock it in, .....(I used to wedge straight, then someone said something about the stress's in the eye)...another can of worms maybe....