That is my home made, high capacity tailings system. Its a crude old setup I made a long time ago, like over 10 years ago. It has worked flawless however, and if'n I was to ever have a newer machine, before it ever hit the field, it would have a new tailings elevator on it.
This one that I made goes up to the feederhouse. I was unsure about the low pressure side of the transition conce at the time I made it, so I wanted to be safe and went all the way to the feederhouse. Now I have plans to someday make a new one that may even be sellable as a bolt on kit, to get the tailings back into the front of the rotor.
If ya wanna know more about it, just say so. I have lots of pics of the whole machine and all the goofy little goodies I've made for it.