This has been a huge day with major progress. After installing the dual controls, I was able to test my fit in the cockpit with seat cushions in place and rudder pedals/toe brakes set to their proper location. Because of my height (6'6"), I've been concerned about the angle of my legs when on the rudders. That seems to be a non-issue since I moved the rudder pedals forward a bit during construction. My concerns about headroom appear to have been eliminated by the new bubble canopy system in the 650. The biggest remaining issue was my ability to move the stick between my legs, since my knees stick up more than the average pilot. As it turns out, that spacing seems to be just fine as well. The final test will only come at the time when the ailerons and elevator are rigged. Then I will know where the full stops are. By all accounts, the max throw side-to-side is probably less than 2 inches. In that case I should be very good.