Sliding Door Trolley

Good evening!  I need two(2) replacement trolleys for an unknown brand exterior sliding door.  The ungrooved bearing rides in a flat aluminum channel.  The trolley is a friction fit into the bottom of the aluminum frame door panel.  The bearings are shot and the trolley frame has a notch worn into the adjustment ramp.  Any chance you might have something that might fit this door?  Thank you for your assistance!  Jim

Thank you for the quick response!