A friend called me over today to see why her 4 or 5 yr old noreg-tag won't agitate. Upon checking it out, it sounds like it's washing rocks! It will agitate, though not too smoothly, for a little bit, then comes to a grinding halt. The rock crushing sound seems to come from the transmission. Is there any remote chance this could be the plastic drive pulley or does it sound like a transmission issue? Washer spins like a top, pump is free and quiet. Any advice appreciated.