Lower track replacement

A handy person from Kaanapali Maui, Hawaii says:
Contractor threw away lower track when replacing floors.
It is 5' long, 3" wide, black/oil rubbed bronze. Doors are 1" with center rollers. Doors sit 3/4" apart when in position. Was manufactured by Charmac, no longer in business. Do you have any suggestions?
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Bob from SWISCO responded:

It appears you need a track for concave rollers. See the 23-271 59" track. Look it over and see if you think this could work for you. 

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