Would have been nice to have that reflex feature on the few full sized I've flown! Not that I've bounced really, really, high, but......... I note that the max maneuver configuation looks very similar to the pics I've looked at on the SU in flight at higher AOA. Also, the pictures of the SU-27 show the LE flaps in the down position when static, and there is what looks like a pin with a ball end in the root which appears to keep the flap from 'reflexing'. So, I think you're right, I'll go for the two 'down' positions.