We are looking for an Andersen EZ Split Arm Operator / mechanism for an Andersen window. The # on the front is C-9400-1 and the number on the back is F-9400-8. The distance between the (2) furthest holes is 4.5". I saw a recent post asking the identical question, but looking at the 39-264 operator and the 39-362 adapter plate I don't understand how this works for spacing holes of 4.5" when the same dimension on the 39-264 shows 3 11/16 hole to hole. Do new holes need to be drilled? Can the existing cover and crank be reused?
Thanks for your help.
John