Need to let them dry for at least several weeks if you soak them. Give them a light steel wooling to remove any residue that might ooze out and dry on the surface. I use duco cement on Watco soaked shafts. Probably doesn't provide as good a bond as bohning to bohning, but I've never had feathers fall off. Can't say as I've had more problems with points with Watco oil. It's important to clean the inside of the point well before gluing. I use a sander to grind my point tapers and use a fairly heavy grit to give the glue more purchase.