Pella Screen Latch Case Assembly

We have old pella windows and need the mechanism that operates the blinds

Need those screen buttons

the single swing arm in the first photo, the crank is present. The crank arm is present. It's the swing arm or the single straight arm that we're trying to find

I need the small, plastic, round disk (pictures #2-front and #3-back) that fits between the window shade transmission and the adjustment knob. I don't know the part number. Thanks, Dave

1967- 1993 Pella bay window shade knob is mounted on the screen. I need (2) kits for the first window on the right. One is for the first floor and the second is for the second floor.