I have the Little Gracie frame. The drag might be from some warping of the boards or the groove just needs a good cleaning. If slight warping is the problem just learn where these spots are and very slightly lift up as you come to those areas. I have one just past the middle and this seems to work just fine. I have extra holes too. All I do is line up the holes that line up if that makes since to you.
I have had no problems with the frame. I just purchased mine 2 weeks ago used and have 3 quilts done!