24" Sliding Window Rollers

A landlord from Ft Myers, Florida says:

My window jams & will not stay in track evenly. Please see attached pics (top & bottom views). Please advise if you think you carry the parts to help.
Pine Ridge Condominiums
User submitted photos of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
Looks like you have a Keller or Acorn sliding window. Our 87-016 roller looks to be a match, but please compare our dimensions to yours in order to confirm.
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