I'm not sure what you are calling spools. I have a North Trail 26 LRSS and there are round anchors in the wall where the shade strings terminate. I had to move one because it was stripped as well. All they do in my rig is maintain the tension on the string that controls the shade itself. Loosen the string a little and the shade moves up and down a little easier. Too loose, the shade won't stay up. Too tight and the shade is hard to move up and down. If you have the same thing, you can move the spools up or down a little (provided there is a little extra string around the spool).