This is what I do. I always remove the scales with the back edge of a spoon before gluing to the limbs. I'll glue them down with slightly watered down tb2 applied to both the skin and bow limb. After their all set up and dried and trimmed/filed or sanded to limb shape I rub in some more watered down tb2 against the grain of the scales. Then smooth it down with the grain with your finger. It helps all the little loose edges of the scales lay down flat. After its all dried I'll lightly hit it with some 600 grit. Not saying its the right way to do it, it's just the way I do it. Scott
