Hi. I just bought a Kubota ZG23 zero turn mower. It is fast, well built, and mows nice, but I am having a couple problems. Is it possible to make a true zero turn on grass and not tear up the lawn? Also is it possible to make a real tight turn and not tear up the lawn? I live in northern IL. were contractors use zero turns all the time so I know they must work well. I just can't figure out the secret! 