Help with supercharger install.

[AznGouki]

I got a supercharger yay!!
Installed it without too much trouble thank to the translated manual and LtNoogies help. But I did face 1 huge problem that is preventing me from driving.
The pulley supplied is not spinning. This is the pulley that acts as the tensioner. Or when it does spin, it makes a really loud grind kind of whine sound. Really really loud. I tested the pulley out when it's tightened without the belt on and it spins just fine. Something is going on once I put tension on it. Just wondering if anybody came across this at all or know a solution.
Also is the pulley supposed to be kinda wiggly when just sitting on it's perch on the bracket? When the nut is tight on, everything is solid.

Rich