Got a used 2007 8010 and its running great however the problem seems to be with the cornhead. We head shell alot of corn unless we close the deck plates all the way. With all the deck plates shut it brings alot of extra material into the machine slowing us down. Is anyone else experiencing this problem with a 3412 head. thought it might be the crop year so we got out the 2208 yesterday and I could really open them up and fly.