This is not going to help you but, I built a spout on the end of an auger for unloading grain bins. It mounts around the tubing and is controlled electricly at the grain bin along side of the pullout auger and sweep auger controls. I have got 750,000 bushels of corn through it and I have not had to pull a truck or wagon ahead yet to make a full load. I can even be inside of the bin cleaning up after the sweep auger, walk over to the door, look out at the load, turn a switch and move my spout to a different part of the truck. Once I park the truck or wagon, I never need to restart it again to move it ahead 2 or 3 feet just to make a new pile in the truck. I never worry about the grain falling onto roll tarp bows or box braces, because I can move the spout just an inch or two past them. I have a patent on this idea and it has been shown to every auger company that you can think of and they all say nice try kid or we are just to busy to take on any new projects right know. This is my story. Any auger will move grain from its inlet(A) and screw it upward to the discharge(B). From there it drops straight down to the floor of the truck(C). Only my dad's 25 year old 60' x 10" Wesco can take grain from A-B and my spout places the grain from C-Z(Z being a full load). Ask the auger companies if their 10",12",13",or 14" augers can fill a Kinze 1050 grain cart which is 20'(240") long from end to end without pulling the cart ahead. Best of all, this idea came to me while in church on Sunday morning. Sorry for putting this all in, but it has been 7 years of knocking on doors with this idea and still I can not get them to take this on.