If you join some of the quilting groups on Yahoo, you will find some answers. Some people are removing the plastic tracks and buying (I think the size is 1/4 inch) welding rods the length of the frame and inserting them into the groove the track snaps on. I haven't had to do that, but when my tracks start causing problems, I will do that. I have the same combo you have. If you need the names of some of the groups, PM me and I'll send them to you. I can't remember which ones exactly have talked about that, but I can check and see.