I have a Lazer Z with a 25 hp Kohler (600 hrs). My problem is that When I engage my blades and push the throttle all the way open to start to cut, the rpm's run away (excessive high) for a few seconds and sometimes as long as 20 seconds. I think its something with the governors but it all looks ok. Springs and links move freely. I have always kinda frowned on washing my equipment regularly because of things rusting. Well...this started after one of my helpers had washed up all the equipment. ( coincidence or not) It seems that something is sticking....checked and sprayed down all moving parts around the carb and linkages with a lubricant and blowed off excessive with compressed air. What could be causing this?