Yes. This is the first modification. To clarify, this kit IS infact intended for the large P3, but the dealer said it is the kit they are putting on the small ones also. Fairly clean sample. lots of green pods in the bin. Just presumed without a return to rotor or bean screen it was the best possible. Maybe should do the chaffer mod.... Not many splits. Yes, I do believe the modification is helping. Seems the rotor is running smoother with less grumble. When there is grumbling it is obviously due to slug feeding from the header.