:pulley is misalignment by 10%. Search TT.net if you need proof. :Your profile shows the pulley that I mentioned and you talk about :being the best (quality product). Since you're in the search mode on me, then you would have also found that I too found the 2mm discrepency and posted it on here. I still believe it's a fine product. It's given me 30,000kms + of reliable service and shows no signs of abnormal wear. if it proves otherwise down the road than I'll have an AMS warranty to cover that anyway. I don't think it's really necessary to try and find other angles to throw at me. Why try so hard to try and convince me of what you believe to be the best. I'll look at what's presented by others and vendors and make my own call. I mean, it's very easy to dig up some dissatisfied member's posts with failed/faulty SZ exhaust parts. But that's not the type of thing we as enthusiasts should be doing. Those occurances did not dissuade the faithfull from SZ in any way to my knowledge. And that's fine by me, because it still boils down to personal choice.