I just purchased a Kubota 500 a couple of months ago. I have been reading the posts concerning the servo adjustment, but they are almost two years old. Do these problems still exist on the 500. I have not really used mine enough to determine what power I have or am lacking as to hill climbing, mud, etc. It is getting close to hunting season here in Mississippi and I will know more by the end of November. Just wondering. Also the RPM increase that was addressed was on carburetor units, mine is fuel injected. Does this still apply? Thanks for any input or info.