Im looking at a 9770 thats coming up at an auction. It has the fixed speed feeder house, and im not sure if that will work for us or not? We cut mostly 30-40 bu wheat, 25-30 canola as well as peas and lentils, everything straight cut. Will hopefully be pushing a 35-40 ft macdon flexdraper. We have had red combines for quite a while now but trying to add a green one to see if we can get some better dealer support. It only has 570 sep hrs but anything special to look for would be appreciated, thanks!