I have heard that guys with new 2020's are having feeding problems. the supposed cause is how the head is being made. Previously during manufacturing the head was supported on the ends giving it a "smile" which would straighten out once attached to the combine. At some point they began to support the header in the center during manufacturing and the result is a "frown" that only gets worse once attached. Granted the conditions these combines are being run in aren't great, down 100bu barley with tough straw, But case knows there is a problem. Anyone with a new 2020, or one on order might want to ask their dealer about this concern.