You still haven't listed one mod that is actually performance enhancing......especially anything that would allow that 9600 to outperform that STS in corn and beans. That in high yeilding beans that 9600 will start throwing beans over the seives long before the STS will. Something is SERIOUSLY wrong here.

Here's a video from last year. Field went 58bu overall. Note the top number in the last few frames. Not an untypical speed with a 35' head as long as the beans are podded more than 3" off the ground.    http://www.zippyvideos.com/8265636441294946/combine-_sept._22_0001/