Does anyone know the proper position for the deck wheels as it relates to deck cutting height, there are three places for the wheel adjustment. I have problems getting a decent cut with this mower(ZT Elite 60" ) I sold a Magnum with a 54 inch cut that did a great job. I have got to the point with deck adjustment that I have a fairly even cut on level ground but when turning it will gently scalp that area. Also when not cutting a level surface from side to side it will still cut somewhat lower on the side facing down hill. The wheels are now set at the highest level and rarely engage the ground. Should they always ride the ground?