Actually, I have about 4000 kms on the superhcarger now. I did a lot of driving the first year with it, not so much last year.
Issues, fitment issues mainly. Everything is tight, and some of the parts did not line up, requiring modification, including the discharge volute pipe which had to be cut. The supercharger exit volute was not set at the right angle. I have since corrected that when I installed the after cooler.