here is a detailed account and analysis of the tragedy..and not sensationalist either
an added part of the theory about the trim tab, is that the abrupt upward G-force caused the seat to break and the pilot to fall backward, with him possibly hitting the landing gear lever beside him, (tail wheel only deployed due to high pressure under wing at speed preventing main gear deployment) and explaining why he is not visible at all in the cockpit which theoretically he should even if slumped over in the seat if it were still in place.
http://thecritical-post.com/blog/201...sh-tcpchicago/
watch the video of it arriving..beautiful plane..beautiful sound... The smoke coming from the plane is steam..because they removed the belly rad, (reduce drag) they had a unique kind of "boil off" cooling system