Its been really bad lately in corn for this. As soon as the grain tank on the combine fills above the window behind the seat in the cab and the auger in the bin has to start pushing hard to heap the crop up, the slip clutch goes insane and the whole clean grain elevator will plug as it says on the screen in the combine. You have to immediately shut off the separator or else it will keep going. It will usually clear itself out after I unload and start the separator but sometimes you have to open up the clean grain elevator door to unplug.... I don't think its just weak springs on the slip clutch due to a high volume crop like corn, because it did it in beans, wheat and barley. Just really annoying when you can only fill the grain tank half way every time and your wasting time in unloading. Its also got the big top and when we bought it, it would fill her all the way up, all 310 bushels. Just started giving issues this summer. If anyone had this issue or knows what's wrong I would appreciate your help!