I did not take into account the bottom of the nacelle ( exhaust stack ) winding up fairly low when at the 90 degree tilt condition ). The V-22 has the lateral control power, but is limited by the aircraft's geometry.
This is very correct, one of the points I used to stress to new pilots was that unlike a helicopter, you're more concerned with hitting the nacelle on something instead of the blades. On a flat surface, they sit only 4 feet above the deck. But, the entire aft third of the nacelle on the Osprey is an IR suppressor though, whereas the 609 isn't equipped as such so should have some additional "play".
And to SAS, yes, in my opinion the biggest drawback to foreign sales is the price, way too high but I do understand the economics of limited production. I believe the 609 suffers from the same peril.