Not sure about pivot shoe size
A handy person from kansas city says:
June 18, 2016
Not sure whether I need the 17/32 or the 9/16... your help is appreciated
Paul from SWISCO responded:
June 21, 2016
Hello! See our 15-046. I believe this can work for you, just make sure the dimensions all match up. I would recommend removing it from the window to confirm that your measurements are as accurate as possible.