Originally Posted by
dinasrt
I was also a victim to the original EC 64.7mm pulley, and I completely agree with the above statement. I realized the issue with it before I even installed it. It was a P.O.S.!! BUT, EC took quick care of me and got the new replacement (no doubt from another machine shop)to me as soon as they had it completed. I have no hard feelings about it. After many miles and occasional autoX and track days, I've had no issues what so ever with the version 2 pulley. 
I noted some problen with the springs and rebuilt it, and it working so far. Knock on wood.