Good thread as I'm trying to work out the CG issue on my bobcat with a P100. My plane is set up about 1/4" behind the CG holes under the booms but the plane still feels nose heavy. My main problem is when I'm coming in for landing and as soon as I go to idle the plane nose dives abruptly. I have up trim with landing flap and am using a bit of crow. I'm thinking that the plane is still very nose heavy. I'll move CG aft a bit more and see how it handles on the landing.