Center of gravity is set while fuel tank if empty for me, and I am almost positive it is the same story with bonebreak.

Are you having trouble landing due to the elevator being too sensitive maybe (so you can't flair easilly without worrying about the plane pitching-up, stalling out, and tumbling?)?

Or are you having trouble on approach at low speed? If you set up your CG at 80mm from LE and got used to it, and then moved the CG back to 96mm I can see that you MIGHT have a tendency of pulling too much up elevator to keep the nose up, therefore losing too much airspeed and stalling out prior to hitting the runway.

I noticed that with an aft CG I had to really be careful with how much elevator I need while doing any maneuver. Basically a lot LESS tail-surface control is needed when the CG moves farther and farther back. With my Yak I kept shifting the CG farther back every outting, and it took me a while to get used to the new feeling everytime. But is sure helps for any high-alpha maneuvers, spins, rolling harriers, etc. It makes slow-rolls a little harder, to me.... IMHO [&:]