I bought the slider. Right now the center hole is the size of Texas (ok, not quite that large). It seemed that when I was attempting to move my quilt, I was moving the slider with it. Yikes. I have taped it back together and then kind of came to realization that I don't think it was helping that much. I also bought the genie washers and don't really think they helped that much either. I just don't use either of them anymore and seem to be doing fine.