One of the first upgrades we did to our 94 R62, They work very well. Bit of a @n$%@n to get in but ours was warped and ROM had to cut and re weld straight to get it right!!! Works well in small grains lentils, Canola Wheat, Barley, Fenugreek, Canary seed, peas the occasional stump and I think ROM managed a pressurized 9 liter fire extinguisher up to the door! (Imagine loud explosion and lots of liquid stuff running out under combine!!!!!) The rock hump door, stop them all!!!! You will fine that any lumps that blow open the rock door will be most likely over on the far side of the door opening, which shows you that there is something not working right in the processor like Dan said! They do make the door a lot more sensitive than the flat standard door but thats better than having 6X6 red wood stump doing its thing in the processorIJIJIJ!! Rolf