Searching for 972994 Weathersheild awning window opera

Window installed 1998
Weathershield awning operator 972994
White 43" glass needs to be large operator
# printed on inside of window M980714000158903

Also would like to know how to adjust window for it seems to come in closer on one side and not the other! I was trying to force the issue and the operator came apart At the handle. I can still pull the window closed with my hands, but not all the way!
Thank you, Ike