Thank you for the clarification, Jim. Your slide out system was manufactured by either Lippert Components or perhaps by Power Gear. While it's not the RBW system I was originally thinking of, I can still help you out.
Your slide out room is simply a box. Change an angle at the inside or outside and that impacts the way the room will seal because the walls of the room are not contacting the walls of the trailer at the correct angle.
When you say there are two tracks or gear bars, I'm not sure if you mean that there are two arms or only one, so I'll try to cover both.
Single Arm System: The first thing to check is that all bolts or screws attaching the mechanism to the floor and the wall are tight. If any are loose, it's possible the room may have shifted. If so, then you'll need to reposition the mechanism so the room is back in square. The room is relatively light, so it shouldn't be much problem if you do have to shift it.
Double Arm System: Again, inspect all attachment bolts or screws for tightness. Take a look at the rear arm. It's possible the height adjustment bolts have become loose allowing the room to drop down at that end. If so, lift the room up and tighten the attachment bolts. You should be able to see the original location on the bracket at the end of the arm. If that looks ok, then you'll need to adjust the timing between the two arms so the rear arm is further in. There are timing adjustment instructions in the manual linked below.
The room should be adjusted so the top of the wall of the room touches the wall of the trailer before the bottom does. When cranking, be sure not to attempt to crank beyond the room limits.
Thank you for the opportunity to assist you. I'll be happy to answer any follow up questions, which are no charge when you use the reply button of the original question.