39-094 and 39-095, but with 4-1/2" long covers

I need to replace the window operators for my casement windows and in reading other comments parts 39-094 and 39-095 meet all the requirements except one. The covers for the operators are 4 1/2 inches long and both of these parts,according to your diagrams measure 3 15/16.

Is there a replacement operator that will fit with 4 1/2 hole that exists or do I have to replace that part of the casement?

The arm is 9 3/8's as specified with the part numbers above.

HELP!!!!!