Kevin, I agree with your standing behind ALL of your (tested in house) products and I also think HD is missing a bigger problem with the oil pumps. The gear rotor pump is a very good pump, however what I think HD is missing is the pumps cannot keep up with the air pressures in the crank cases. The pump by itself cannot overcome the air and oil at the same time. This is creating a vacuum that will lead to sumping. This is JMO, what I cannot still figure out is why do not ALL M8 engines sump? I also believe the head breathers are not able to remove the pressure in the cases fully and need to be addressed by HD