Lightly sand the bead seat on the rim and the bead on the tire. Wipe em clean with a damp rag. Mount the tires on the rims, making sure the tires are seated right. Then I like to peal back about an inch or so of the tire to get the glue to the bead. I like gluing three spots at equal distances a part and letting them dry. Then go around and fill in the rest. It isn't messy or hard at all as long as you don't use an excessive amount of glue. Quality CA glue will flow right into the bead, basically doing the work for you. Let em dry for an hour or so before running.