I have run this 92'8570 in corn and beans for the last four years. Every season I have had problems back feeding the feeder house.
The dealer I bought it from suggested a host of remedies from speeding up the cylinder to slowing down my ground speed. This summer I took it to another dealer for a pre season checkup. When I described my difficulities, the mechanic had a solution. There is an attachment for a rice combine that looks like a flat bar that bolts to the vanes on the front beater giving the beater about a 1/2" more reach into the material and a sharp edge to help pull things forward. Sure enough my machine had no such attachment. The mechanic learned of this fix at a training meeting from another mechanic. He told of a customer that was ready to get rid of his 8570 but tried this fix and now couldn't be happier. I am looking forward to similar results.
Jeff