All models since development of the S70's cockpit seats were built/designed to accomadate the '98 percentile' man's control/use of the cockpit. In addition, crash worthiness and ergonomics were applied to the mix along with egress from a fully stroked seat following a crash. Again, the design is for the '98 percentile man' with the other 2 percent (I guess) having minor problems. I suspect the ultimate seat would come from an 18 wheeler Kentworth and if you own the craft, why not try it? I understand milk bottle crates were a little hard on the butt in very early models by Igor.