wow,this beast drinks fuel,Iwas doing 100+bu barley at 18%moisture, did about 70 acres on .75 tank of fuel.wow. how is your 9870 on fuel, let me know,I'm really curious.My 9860 with an Illinois dyno tuner was really pretty easy on fuel.this was pretty green straw and a nice stand, but man that seems like a lot of fuel. 2.8 to 3.8 mph. probably averaged 3.2. really doing a nice job though, nothing out the back and a really nice sample.35 foot FD70. tell me about your 9870's.