Yes,thats the way I think it should be but if you withraw and re insert the whole pin just 1 time through the bottom bobbin, how tight is it likely to end up at that bobbin.
Agreed, so perhaps think of it this way.
The pin passes freely through four items:
The upper and lower body bobbins.
The upper and lower adjustment bushes in the door.
Ignoring the design intent, here's what happens.
The pin will rotate in whichever item puts up the least amount of resistance to movement (friction).
In our ~50 year old cars, that's invariably the body bobbins because they offer the least amount of resistance to movement (friction).
EuropaTC in Reply#7 links to a thread where he outlines how he went about restraining the pin so that the pin remains stationary relative to the body and rotates in the adjustment bushes when the door opens.