Thanks for the reply. I always make sure the belt stays on the motor shaft as well as the pulley prior to ourrong panel on. At the same time I made sure to rotate drum to align the belt. This noise did not occur when spinning the drum while panel was not on, so don't believe the blower wheel is the issue. I can do a double check with the belt being on accurately, but confident this is not the issue. In the meantime any other possibilities that would cause this "rubber ping" noise when the drum does a complete turn?