The lever on the side between the seat and the door is the HEIGHT adjustment. IF you cannot see the same 2 bolts in the rear of the seat rails.....on the FLOOR.....as you took out in the front.....then the HEIGHT ADJUSTMENT IS in the way.
Follow along. There are just 4 bolts that hold the w123 seat in the car. The whole seat comes out......wish I had a pic of the thing.....let me look...
Well, here's a pic of 2 blue seats --- different years. There is a bolt is each "corner" of the frame. Sorry, I don't have a better pic. The HEIGHT Adjustment appears to be forward in the right hand seat. I can see the front hole on the seat on the left.
