In 1963 our small flying club upgraded from a 170A to a 1962 Mooney M20C. During our checkouts, all of us almost lost control on takeoff due to oversteer. We contacted the Mooney dealer that we had bought the one year used Mooney from told us to come right there. It took 15 minutes to put a small spacer washer under the nut fastening the rubber doughnuts to slightly bring the tire aft. Problem solved.