Seedman
Guest
We have the same pickup on our 860, and it seems the only time we really have that problem with it is when we have the header down too low, putting the pickup belts at an angle that is almost parallel to the ground. Check the angle on the front belts. Our chains are adjusted so the front belt is approx 30 degrees when the chains are just snug.That seems to work the best to prevent backfeeding.