Screen door roller

Sorry I don't have photos and can't get any for a couple of weeks so I'll have to describe the situation.
The sliding door opening is 12 feet with a pair of 3 foot bypass screens on each side that meet in the middle. There is a single "U" shaped track on top and bottom. There are 2 spring loaded adjustable rollers on top and bottom of each screen. The opening into which the tracks are installed is not square and, as a result, there is up to 3/8" or more variation in the opening height. I'd rather not try to fix the variation in the tracks if there is an option for a better quality, more adjustable, spring loaded roller or other hardware that will resolve the issue.
The current roller is similar to this https://www.homedepot.com/p/Prime-Line-1-in-Nylon-Spring-Loaded-Sliding-Screen-Door-Rollers-Columbia-2-pack-B-530/100147508
Is there a "GOAT" spring loaded, adjustable roller you suggest that will compensate for the variation? Is it possible to install an adjustable tandem roller that can be used as a replacement for a single roller? Is there such a thing as a spring loaded "tensioner" or other hardware that can be installed on the top of the frame that will keep the screen on the track?
Thanks for your assistance!



Thanks for writing in. There isn't quite the roller you are describing, but I have an idea. Remove old roller and instead place our 84-008 roller in the opening. Attach it with 33-071 screw under the door rail. The adjusting screw on your old wheel might be long enough to use with this roller; if not, try using either our 84-502 or 84-506. For the top of the screen, you could use two 86-012 top tension springs. I've done this on a few of my own doors and it's worked great; without seeing your old door and hardware I can't get more specific or be certain if you'd run into any issues, but please review and let us know what you think.