DOOR LOCK ACTUATOR 1983 240D

[rickmay]

I want to replace a couple more actuators, but have a question after installing the one in the rear driver-side.

The actuator I bought has a place for the rod to go into. There are two plastic wedges that are supposed to lock the rod in place, but I cannot squeeze the two wedges hard enough to get them fully back down into the holder. The holder is like a rectangular cup and the wedges are inserted on either side of the rod. This seems like a poor design or am I missing something?

I am afraid that if I squeeze any harder that the cup will fracture.

Thoughts?