I'm getting a little squeling when I'm running all the accessories. I've been told to run a double pulley and belt to help this out and get the full charge under full load. I have a 350 w/ the buick roadmaster 140amp alt. What are you running on yours? I've put a new belt on and that lasted about 1 month (doesn't get driven that often), and the tension is good, not too hard and not too loose. Where is the best place to look for the double pulleys and is there one that maybe came OEM on some make vehicle that I could use instead of buying a new one. Thanks Ahead of time.