71 Bench Seat Question

[71-C10]

I am putting a new seat cover on the bench seat in my 71 Cheyenne. The rod that connects both of the seat tracks has come off. I have the rod, and I can see where it goes in to a hole on a flat piece of metal sticking out from the track adjuster on the passenger side. The flat piece of metal sticking out from the drivers side track adjuster looks like it has a "C" notch cut into it. There is not a hole for the rod like on the passenger side. Something has to be missing here, there's no where to attach the rod. Any help will be appreciated, maybe a picture.

Thanks,

Eddie