the pulley was a brand new never run m/b pulley
it was definatly a bearing grind i heard with a stethoscope. i removed it as soon as i heard it. imo as this was the 2nd pulley in the same spot to fail they are just poor pulleys.
woody did warn in a post about the bearing spinning faster due to the creation of a smaller diameter pulley. i also had a tensioner pulley bearing AND a oem s/c pulley bearing go bad. thats 4 bearings on the full setup. too many for me!
while none of the bearings seized and caused any damage it could have just as easily caused a total mess under the hood. thats why im so interested in rob's setup adapted to the c3 crowd. then everyone sleeps better at nite

btw rc, mike left the outside edges just machined them for a great fit. i think his work was top shelf just preformed on an inferior product