So I have a new 9330, and when pulling an average load, (22' disk ripper, approx 5.5 mph), I like to run 1800-1850 RPM. I have had people, including techs from JD tell me I should be running 2,000 rpm instead! This goes the same for my 9320 also. I just cant justify the extra 200 rpm's + the extra fuel it would be using, since I'm at the top speed I can physically run in the ground I'm working. Should I kick the throttle up? Or stay at the lower eng speed I've been running? What are your opinions?