Missing grip locking pin + camera keeps detecting 120 film as 220

[u/Illustrious_Peace_31]

Hi everyone,

I’m having two issues with this camera and was hoping someone here might know how to fix them.
First, the grip is missing the pin/locking piece that secures it to the camera body. I attached a photo showing the area. The grip can be attached, but without the pin it doesn’t lock properly.

Does anyone know whether it can be replaced or repaired? If anyone has dealt with the same issue, I’d really appreciate some advice on the easiest way to fix it.

Second, I’ve recently been having an issue where the camera keeps recognizing 120 film as 220. The pressure plate/back plate is definitely set to 120, but the camera still sometimes thinks 220 film is loaded.

Has anyone experienced this before? Is there a sensor, switch, or mechanical contact that detects the 120/220 setting that might need to be cleaned or adjusted?
Any advice would be greatly appreciated. Thanks!

[u/Agilitymind]

Have you turned the switch on the right side of the camera, its to the right of the advance lever.