Thank you everyone!
Lynn, I changed out the tracks because I wanted it to be bigger is all. it was 6 foot, now I have it set at 8 foot. plus DH said he would put an extension on it smoehow for me to go bigger if I wanted.
Question for everyone.... have you used a fleece like blanket on a frame for a backing before? If so, how did it work out? I have one and want to use it on this next practice top