As part or our capacity building plans, we've decided to upgrade our 1956 combine to a more modern 1976 combine. The old combine was a pull-type, meaning that it was towed behind the tractor - which in turn forces us to drive in a clockwise pattern, starting at the outside perimeter of the field. This combine has its own engine and frees us from that constraint, and allows us to seed another 10' around the perimeter of the field. A down-side to the newer combine is that it does not have a scour cleaner - a clever contraption that diverts the tiny weed seed out of the harvested grain, and funnels it into a separate bag. It can be used as chicken feed or compost, but more importantly does not end up back in the field. .
It will take a while to 'make friends' with it, find all the grease fitting, and to read the manual a few times(...yes I am a manual reader;-))