Bikebreath,
I recently got a LNL AP and it came with the Standard Rotor & Standard Metering Insert installed. Once I switched to the Pistol Rotor & Pistol Metering Insert (included w/press) my powder drops got much better. When I adjust my load, it takes me about twenty drops/measurements to get it dialed in, and then it is good to go until you touch it again.
P.S. I also use W231 in my LNL AP and it is a very well metering powder.
totally forgot about this part...