I got a 25hp kawasaki(horizontal). I'm having to reset the rpms every other day cause it either loses rpms or gain rpms. I can't figure out whats going on, the speed adjustment slide is not coming loose and moving itself. Also, if it was coming loose, I should only loose rpms. My rpms have gotten up to 4,000, when they shoudl be around 3600. I've been pulling my hair out on this one, anyone got any help?