I just replaced the rub bars (they were bent from a rockIJ). Concave looked good, machine has 1400 hours, 20 foot header. In canola I can pick up a 20 foot swath at 3 mph works out to approx 400 bu_hour (60 bu_ac). My wheat looks like 80-100 bu_ac with a lot of straw, I was going cut it short and bale the straw but how much will it slow me downIJ Thanks Oh yeah, I am tired of fixing my rotory, the feederhouse is to narrow and I have had constant problems feeding for years. This Deere is kind of boring, just drive back and forth all day without stopping to unplug the feeder, replace chains that blew off, etc. I am starting to like the green paint.