Forgive me if this is a repetitive question. Can rawhide backing be ran all the way to the tips with the tip overlays glued over the rawhide, or is it better to just run the rawhide to the tip overlay? Also, how rough does the surface on the back need to be before glueing on the rawhide? Thanks for any help. I am backing a bow for the first time and I don't want to screw up.