We are using a 2412 corn head. I guess its the only series of corn head that will fit this combine. You can take two approaches to the feeder house issue. Neither of them are the correct one I believe, but it has alleviated some of the pain. The first way we got it to not jump was tighten them equally tight on both sides, and turn the feeder house speed up and the rotor speed up. IT seemed to keep all the trash from building up in a wad and getting between the middle sprockets and the chain where it would jump. I know this is a temporary solution to a permanent problem, but we were willing to do anything. lots of trash was being spit out the feeder house when we did this, but we were trying to get some corn cut and we weren't really losing much so we kept at it. The second thing we did which seems to have helped the most is discarded the case chain all together and went with a manchester chain. CASE sent out a kit which included the four seperate chains and slats that went all the way across the feeder house. There were 18 or 19 slats and they were more aggressive and I think actually pitch corn into the rotor. This allowed us to slow the rotor way up and run the feeder house on its automatic setting. wow, what a difference, no corn or trash was being fed back down the feeder house. CASE knows there is a problem. They are on it.