PI HAT

Anyone have issues with breaking rockers because of the clearance between the back of the rockers and head? A few of the Harland Sharpe rockers broke on me becasue they were rubbing agains the outer wall of the head. TSP told me that those rockers would work with their heads. What do you guys think? Do you think it would hurt anything if I used a dremmel and shaved a little head off the lineing behind the rocker so it could rock freely?


Know were I can buy 1.7 Harland Sharpe rollers by the pairs vice all 16?