I still think you have a binding issue with the grip. I had that same issue and when I got rid of the Kuryakins (spelling) and went to the Avon grips, no more slow roll back. I know it is associated with the groove in the Kuryakin grip, but how to prove it, when you cannot "see" it is another story. All I know is when I loosened the bolts on the chrome housing, it snapped back, but when tightened back down the slow roll. So I know there was a binding issue.