1993 Dodge Dynasty belt squeal problem

'93 Dodge Dynasty 3.3L Engine, AC, PS. Has a very bad and embarrasing belt squealing problem. Have replaced the belt, the automatic belt tensioner and idler pulley's twice. Even replaced the alternator. Nothing helps. That belt spray stuff you can buy just makes it squeal even worse! I had to wash that off before I went deaf. The power steering pump, ac compressor and water pump all turn very freely.

Had the exact same problem on a '91 Dyanasty with same size motor. Is there a design flaw or something with the set-up of the pulleys or something? At an low idle I can tell the squeal happens in relation to the belt. In other words the marking on the belt are in the same spot each time the belt squeals the loudest.

Is there something someone has come up with to solve this problem? That engine uses a K060980 Gates belt. Thinking of trying a K060975 which is 1 inch shorter if I can get it on there. I've been fighting this for 2 years. Help.