I'm flying the Yellow Katana also. It's stock except I added a bit more rudder authority and upped the roll rate by 30% if I remember correctly.

The KE stinks, but then again, I assume the real thing does also since the 40 and 90 size Funtanas don't KE well, so I guess that's not bad (accurate sim of the model). KE coupling is good, but there isn't much side area, so full power does almost nothing for KE climbouts -- just like the smaller funtanas. I've seen bigger Katanas do sustained KE so I guess it can be done, but I don't know what it takes to hold it there.

Up close, I can live with it for hovering and most aerobatics. The thing I hated worst was the rolls slowing down far away, and also other control inputs would lag. Sometimes throttle would seem to get "stuck" and just when I needed a quick blast of throttle and full elevator travel to jerk the tail around ( say, like in a waterfall close to the deck -- but yet far away) the plane wouldn't respond right away, but then when it did, the plane would be over-rotated, and I'd get the throttle at the wrong time so I'd rocket right into the ground nose first. It was funny until I realized I wan't really in control anymore.

I didn't think it was a system config thing either, but I really wanted a second confirmation on that.

Thanks very much for your responses.