I have one as well and i have to say that it is difficult to get the plane flat spin without mixing. Had to move the cg 5"+ rearward. It doesn't do really well upright flat spins but it will do one hell of an inverted climbing flat spin.

I still have a hard time with blenders, i've only got one out of the plane so far!!!!

Waterfalls are still tuff to get correctly, first revloution is not very tight at all but will tighten up if i play withe the throttle.

Inverted flight is brilliant, if anything it flies more stable inverted than it does right side up.

I find hovering to be a little unstable as well, but i am a little nervious as i have ruined two birds in a week two weeks ago. One due to mid tree collision and one due to damn nylon clevis.

This is just a throw around plane at $120, use the 46 fx, i have a tt46 with MCP and it hovers at under half throttle. Use the Saito on something more substantial loke a funtana or something.