Well I have searched the site high and low and everything points to a bad scenario....I was having carb problems with my Exmark Viking. I got a kit for the carb and replaced it....probably should have just bought a carb for it. Anyway this unit never has seemed to reach the specified RPM at fast idle so I readjusted the governor....bad move....now the unit will run at full speed and the governor seems to be not working at all now. After several attempts I have gotten the fast idle back where it belongs but the governor does not seem to be functioning when the blades are engaged. I have a bad feeling there may be an internal problem. I have removed all of the linkage and reinstalled and adjusted according to the kohler manual. I thought I may have bent the linkage from the governor to the carb but even bending it hasn't helped. It seems hard to imagine all this trouble from just making a slight adjustment to the governor. Any help would be greatly appreciated!!