Replacement casement hardware needed

Swisco Team,
I have 8 casement windows (6 right hinged, 2 left hinged) that have failing mechanisms; the crank shaft appears to be breaking or coming out. I have a contractor that is going to do the removal/installation work (I would probably break the windows trying myself), but I need to order the replacement hardware. I am hoping you can help me identify correct replacement parts. The mechanism is stamped Truth 40471 and with a long arm stamped Entry Guard and a short hinged arm with 30841L stamped on the first length and 20810 on the second length. The pictures are not great since I am not the one removing the old hardware, but hopefully enough that you can direct me towards an appropriate replacement. I appreciate any help you can provide.
Thank you,
Doug