My rural king tiller has a slipper clutch on it. Before using it i loosened it up and burnished the clutch surfaces. Tightened it back to where it was set and put a line on it with a paint pen. Tilling food plots today breaking fresh ground i hit some goobers. Enough to bog the tractor and make the tiller jump off the ground. I checked to see if it was slipping and it is. But im not sure if its slipping enough? This is my first slipper clutch so im not sure on how tight or loose they should be adjusted. Thanks