I have been running exmark navigators for almost 4 years now and will be replacing one of them with a ztr. I am pretty set on a scag wild cat but just had a couple of questions. Since the scag seems to be built like a tank and weighs as much as one, have you guys ever had a problem with it creating ruts or stressing a lawn out? Second question, I have been told to stay away from the liquid cooled engines because the screen gets clogged from debris. Is this true? Thanks for replies, I hope to be a happy scag owner soon!