Lycoming IO-360-A1B6D- New cylinder #3 cylinder in 2020, SMOH-1485.8, TT- 6379.8, Prop Strike because of gear up landing ( Flange dial .009). Dye Penetrant test show no cracks to the flange or flange base. This engine was removed from an M20J Mooney. The last inspection was 10/11/2020 with the following compressions (#1 62/80, #2 74/80, #3 74/80, #4 68/80).