I think we can help, but I'm afraid I can't determine what you have from these photos alone. Concerning the track, can you tell me its height and width? I will also need to see a clearer picture of the rollers you mentioned. It will be necessary to remove them from the door in order to ID. Too many important details are obscured so long as they're still in the door.
Thanks for your patience during this busy season. After reviewing your photos, we pulled up all the related parts that go with you doors and associated them to this page. For your 24" track, we only have the 21-452 low profile track, which is 1/2" high. The manufacturer discontinued the 1" high track unfortunately. They suggest you adjust the bottom 23-113 pivot to raise the door or add a shim to the top track. We also carry other lengths you might need.
Some other parts to consider are the 23-112 top pivot, 21-174 roll guide, 21-286 snugger, and 21-175 bracket. Note that the 21-450 track already comes with the pivot bracket and nylon roll guide.
The adjustment of the 23-113 pivot will help when compensating for that lost 1/2", but it won't do everything. More importantly, you have to shim the top track. You can use a piece of wood, for example, to bring it down the remaining amount.
You might also know the snugger by "bumper." It basically just helps the door open without banging on either side.
