John,

I have a Saito 72 in my Matrix and am very pleased with its performance.

I have not been able to get it to flat spin. I have a 14/4 APC prop and the cg at the published aft limit. Control movement is also at the published limit. With other planes I have been able to get into a flat spin from a spin by feeding in opposite aileron...but all I get is either a rapid spin in the opposite direction or the airplane flys out of the spin entirely.

Any suggestions?