A quick learner from Porter Ranch, California says:
August 15, 2018
My dual arms glide work just fine, but the operator is stripped. Do you handle that part? What's the point of having old windows that you can't open? Any assistance will be greatly appreciated.
Pat
Tom from SWISCO responded:
August 17, 2018
Pat, thanks for your photos. You can get these old windows opening again. Start by comparing your part to 39-348 (with the 36-078) to see if it's the same thing.