I'm going to look into the feeder chain first thing. I'm assuming that it slipped on one side, so I'll get that straightened out. I was able to turn the pulley under the cylinder to move all the belts, etc., and everything seemed to be moving freely.
I'll probably start off using the 1100 Massey, since the combine is so heavy. I picked corn last Fall on the same field that I have oats on now, using the WD and a single row NI picker. Power seemed good but I was slipping the wheels a bit when running uphill when the wagon started getting full. Need new rear tires on the WD. Since I have alfalfa under the oats, I don't want to be tearing up the field.
Good advice on the cylinder belt. I need to replace the one behind the cylinder belt, since it has a big crack, so that might be the time to change the one for the cylinder too.
I have to check the serial#, but I think it was in the 8000's range.