I'm pretty sure we can help, but the part in your picture is only the inside portion of a larger roller assembly. There should be an outer housing, probably still installed in your door. If you can show us the complete roller assembly, we can recommend a match.
The corner tilts out just like the new style. The bottom screw and the tabs on the bottom lock it in place. You may find it easier if you remove the bottom rail.
Thanks, Dave.
I'm going to order those wheels. If they don't fit maybe that'll convince me to finally get a new door that has somewhat better insulation properties for our 0
I personally guarantee it will work.
If it doesn't I'll fix it for free.
I'll only charge time and mileage. California to Oregon, can't be that far. ;) Only 22 hours or so round trip.