If you do a search, you'll come up with a bunch of buildalong type threads...I use TBII...rough up the surface a bit, soak the skins to make them pliable, but dry on paper towels after, coat roughed up surface with TBII, lay out skins taking care to make and keep them flat...trim edges with new, sharp razors in 24 or so hours...finish with whatever after you are sure they are good and dry...use some CA in any spots that lift or have bubbles.
Question -- were these air dried skins or tanned?