Pella Window Cranks

I have a house full of Pella windows (17) with cranks. (So, I may need both left and right sides?).
I bought the 1988 home from original builder-owner and he left spare Pella-brand window cranks. I have 5 Pella cranks, still in bags, and they are marked with "X429" and 7138 on the inside base surrounding what I think you call the "bore." Only the bore on mine is not circular but it has a manufactured notch (or void) area with no metal, making a scallop-shell pattern. The scallop area has 8 points, and the rest of the base is flat - no notches.
All I see online that gives a picture/diagram of the bore shows them as completely circular.

I want shorter cranks so that I can start adding shutters/wooden blinds. I prefer a "Tee" shape crank to a folding handle.
Please help with info on replacements or universal part numbers, or aftermarket suppliers if Pella does not have this as a "Tee" or the less-preferable Folding crank, to fit the bore.
Replacing the current windows is not in the budget, Anderson and Pella quotes are both around
$60,000.

Thank you for replying, Emily... The windows are amazing, in ease of use after 32 years.
Sending 2 pictures.

Thank you for the reply. I now know what I am looking for. My current cranks are the copperite color and the Tee crank in that color is not available. I am pretty good with spray paint, so I may order a few and try to match or blend. The windows do not get opened frequently as the screens are showing their age and they are a manual, inside fit, so not attractive during Summer bug season.
But, I appreciate your help with the identification of Pella appropriate parts...
Many Thanks from a not-so-quick learner in SC