Without standing there with you, it's pretty much impossible to diagnose a noise, but you didn't mention the limb pockets.......did you remember to check to see if the locking screws on top and bottom are tight?

Strip it down bare bow, slide the Vibrablocks to the limb taper where they belong, start over.
Try just plucking the string to find a noise, try shooting with just a very basic rest to eliminate accessories altogether.
Check your E-clips.