Re: any issues with the supercharger itself?
Some have failed. Mine failed due to an extended high sprited run while running stacked pulleys. Cost was 6-7K (warranty).
I know Randy had his SC replaced also. Can't remember why.
Our superchargers show up on Ebay once in a while for around $800 - $1,500 or so. That or a salvage yard is the way I would go if it was on my dime.