Originally Posted by urBan_dK
I have the sound after installing the MS pulley as well, at full lock. I wonder if the single pulley design of the AA pulley exhibits this issue. It stands to reason that the smooth pulley/belt from MS isn't grabbing as well as a ribbed pulley/belt would.
My AA pulley has never made a sound. I have the older '08 pulley though. I dunno the differences so I'm not sure if that affects it or not.