I make the big mistake of trying to get some more rpm out of my kohler 15 hp. I loosened the bolt on the pin that comes out of the motor that the throttle is connected to. The one that kicks up the rpms under load conditions. Big mistake! now I am having a tough time getting normal fast idle . Is there some trick to adjusting the pin that comes out of the motor. I have loaded the backup mower on the trailer and am ready to take it to the shop but god knows when I'll get it back.