Saw this posted by a person on Reddit so it’s second hand.
“What Weber told me is that to get a tight seal of hopper and auger requires machine assembly. Some bbqs were hand assemble to meet delivery dates. New smoke fires will all have machine assembled hopper+auger.” This apparently was allowing smoke and ash to get to the motor and cause it to behave erratically. So based on that maybe doesn’t matter if it’s Rev D or Rev F unless Rev D were all hand assembled?
“What Weber told me is that to get a tight seal of hopper and auger requires machine assembly. Some bbqs were hand assemble to meet delivery dates. New smoke fires will all have machine assembled hopper+auger.” This apparently was allowing smoke and ash to get to the motor and cause it to behave erratically. So based on that maybe doesn’t matter if it’s Rev D or Rev F unless Rev D were all hand assembled?