Good afternoon!
The Swisco 15-194 (1 inch closed cam) shoe appears to have the exact same measurements as the shoes in the picture. The Pella channel is recessed and the shoe cam is open on the top to allow the pivot bar to slide into the cam. It does not appear the 15-194 would work in this situation. The Swisco 15-236 appears to have the relief (slot), but is too wide (1 1/4").
Does Swisco have a 1 inch shoe that would work in this situation?
Thank you very much for looking into this!