blend door on 93 chevy linkage problem

[Robert252]

1993 Chevy 4.3 Manual tranny

my blend door has a rectangle that is hanging from it and next to it is another door without a motor both doors have this rectangle thing hanging from them and they look like they need to be connected in some way but I am not sure.
Sometimes the one with the motor gets hung up and the a/c display starts to blink. After I unhang it the display turns back to normal.
The fan works but the doors are not directing the air to the right location can anyone help me with this?

These doors are located under the dash toward the center of the truck
I have searched other threads but no one seems to have had this problem.