I just installed a nice NATO strap I got during the Black Friday sale at natostrapco.com. It looks nice but there are some jagged edges in the nylon that are irritating my wrist. I think this is from the stitching around the buckle. How does one smooth out these nylon straps? I could clip the jagged piece but I don't want to weaken the stitching. Can it be melted or sanded? What techniques do you use?