Oh, yes, those big ol' balls are making another set of tracks behind the R52 in this warm weather! I cannot stress enough what a marvelous difference lee made in our combine by setting the governor correctly. It went from a complete dog that we were very frustrated with to a beast mother with a temper! As Hyper stated, it cost us about $170 and that is derned cheap compared to turning the idiot screw up and pumping more fuel to get the hp. I've had a couple of people email me in the past year wanting the phone n of the shop in Ft Dodge. Either lee will love me for this or curse me, but here is the vital info: Midwest Diesel Injection Service