Dual Arm Operator Replacement for Casement Window

A home owner from Saint Paul, MN says:
I have 2 casement windows that were installed by a contractor/carpenter about 12 years ago. Neither one cranks all the way closed anymore. I have no idea what brand the windows are, and visits to 2 hardware stores have not helped. I want to be sure I am ordering the right thing.

I think I am pretty close with the Maxim Dual Arm Operator, Sill Mount (39-253R); the Truth Hardware Track Slider (39-529); and the Truth Snap Snap-Stud Bracket (39-545). Do you agree? You will see measurements in the photos I have attached.

Thanks for your help!!
User submitted photos of a window operator.
Profile picture of Paul
Paul from SWISCO responded:
Hello! Yes, I agree. The selection of parts you picked out closely resemble your hardware, but just make sure our dimensions are the same.
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