driverside mirror fix?

The tension, I believe, is in the head of the mirror itself (not at the joystick control) so you'll likely have to pull the mirror to do anything with it. Shouldn't be hard to do after pulling the interior door panel. Working with the mirror guts is a different story. I have some pics on my project site at: www.70duster440.com (click on the "Misc" link at the bottom) which may or may not be of help.

It's a ball and socket deal behind the mirror glass - and if it's worn out I'm not sure how much you can do with it.