I have had some clearance issues with the sc pulley since day one. It appears to stick with no clearance. I can push it and move it around to get back to the correct clearance. I now have several shims installed ,and will check it. Drive a few days check it again, and the clearance is different or gone.It appears to stick a bit. I believe the pulley fits too tight. When I first did the install it was so tight I could barely get it on the sc shaft. Right now it is working the best that it has. At least there is always some gap even though one time its a lot (.30+) .The next time its close (.10). The other weird thing since the tune.When I have the a/c on the idle jumps up and down by 300 rpm. Before the tune it was smooth as silk. I turn the a/c off and its fine again. As far as driving the car is a beast and pulls hard from 1200 rpm to the red line.