Deere tables run at the slowest powershaft speed, around 500, wobble boxes don't like it much faster. Corn heads can run from 5-700. If you don't like that, switch the drive_driven gears around on the sides of the corn head to speed up_slow down the head vs. the feeder house. Want to make the chains go fast, but keep the rolls slowIJ; put larger sprocket on the drive gear for the chains. Several guys around me have done this,and I think I will to this year since I have a bunch of goosenecked corn to slug through and don't want to throw the ears out. GS