Yeah I remember that now. You need the Allen wrench to loosen the fronts if they are too tight the thumbscrews won't help. Leave the allen's a little looser so you can adjust easier.Rufio said:Each rail end has two screws. The outside thumb screw and a screw underneath the rail end cover. The thumb screws should loosen to allow you to move the rails. BUT if the screws underneath the rail cover are on too tight, (they're not suppose to be) then no matter how loose the thumb screws are, the rails are hard to move. When I initially installed my rails, I made these too tight. Sorry no pics of this.