Alex,
It is not too difficult to pull off the door panel and watch the window mechanism work. It may not need an adj. in the actuator but the window might me hitting on something on its way up. I just had the window guts out on my 450 slc to replace the door stop strap. I got the new strap out of a scrap Euro 350slc with out electric windows and it was easy to manuver inside the door. Putting the strap in the 450 was another story since it has electric windows. In the end I had to remove the window and slide it into the corner. Still, with the panel off you can see all the action. If you have to remove the window watch where the adjustments are since the window will have to go back in the same place.
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