I found on the second sprocket that loosening the tension a bit was a good thing. It worked, but... the squealing squeaking chirping annoyance was only deferred for a time. Once that noise begins the sprocket has already been damaged and it only accelerates. The belt has eaten through the hard anodizing and is into the softer aluminum underneath so game over.
I have fired off an email to my dealer to send me the old sprocket and I am going to preemptively send it to that outfit in California to have the old sprocket teeth machined off and replaced with the neoprene teeth.
Someone posted this and I finally found it again!
SuperMax 
