I had posted a few weeks ago looking for opinions of the frame and a Pfaff Grand Quilter and I ultimately purchased them. Thank you for all those who responded in helping me make my decision. So they are here and I have started putting together the frame last night. I have it all together except the rollers. My problem question is where the two pieces of frame come together on the middle leg, there are two bolts that are come up through the leg into the channel and are held by two nuts that sit in the channel and then there are two bolts that come down from the top of the rail into a connector to help hold these two pieces together. My question is how do the wheels of the carraige go over and under these bolts and nuts? I have watched the video a million time and can't figure out what I have done wrong. Any help will be greatly appreciated. Thank you