BiltBest awning operators broken

A home owner from PA says:
I have several BiltBest operators that are not working - crank is broken along shaft or just rotates w/o grabbing. Probably original from 1962-64. Photos attached. Thanks for your help.
User submitted photos of an awning window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
I'm afraid that this BiltBest operator is no longer available. You may want to consider changing it over to a newer style awning operator like our 39-015 or 39-083. You will need to modify your sill wood trim cap to accept the new style operator. Let me know what you think.
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