It certainly sounds like the belt is too loose .

Look at the part #'s on the belt, it's important to use a 10MM belt, Pelican sold me two sets of 9MM belts in the proper length because I didn't check them before taking both cars apart I decided t use them and both required seriously tight adjustment before the squealing stopped .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better