Does this p/s pump modification work?

Generally speaking if e-berg over at mopar action prints up a tech article it will be something legit. Think about it this way. Nobody was paying them to advertise their product in that article. They tell you to use a simple parts store washer as a shim. It wasn't a case of them receiving a free "superdooperdiscombobulator" and then installing it and telling us how great of an improvement it made to their cars, bank accounts, and sex lives like some magazines have been known to do.