My tailstock is seriously misaligned and I'm finding the instructions for alignment in the manual confusing. I have the Acruline center, but when I loosen the cap screws underneath the tailstock and slide it over the Acruline, I can reach only two cap screws to tighten them. So I move the tailstock to tighten the other two screws and it's no longer aligned. I also found that if I tighten them too much, the tailstock won't move at all. Help appreciated. Kim