Andersen Operator Issue

We are looking for an Andersen EZ Split Arm Operator / mechanism for an Andersen window. The # on the front is C-9400-1A and the number on the back is F-9400-8. The distance between the (2) furthest holes is 4.5". Can you lead us in the right direction for the correct replacement part? Respectfully,

Attached is a pic with dimensions.
The main difference from the 39-264 is the distance between the (2) furthest holes is 4.5".



Any other questions, please let me know.



DelThank you.