I noticed something in the last couple of days. My combine is old so I have to go slow and keep the door open on the cab to try and watch the back of the machine. If it plugs it stops throwing chaff out the back and if you dont stop and let it clean out you get a plug like I got last year when I fell off it trying to clean it out. I see farmers are buying rear view cameras with a 5 inch screen and mounting them on these old rigs to watch and keep the cab closed. I am searching and found the average price is 40 bucks. I think I may buy one or a few.