I could never get this plane to tumble. I'd end up with an outside loop and it wouldn't be very tight.
I believe the saito was too heavy for the original configuration.
Since the weather is trash I'd thought I'd do something to it to see if I could improve anything on it since all other plane projects are ready to go.
The engine will go into a Flip, U Can Do, or a Hype. That's what I'm kickin' around any ways.
In the meantime this is something to work on until the weather is fit.