For those who plyed combat flight simulator 1, 2 and 3 before they moved to Aces High, i highly recomend to move A6m2, A6M5, corsair, hellcat, N1K2-J, wildcat, Spits, hurrs, 109s,190s, 262s engine sounds to AH. Also, go search for gun sounds like the .303s and .50 cals from netwings.com or other websites that has gun sounds for combat flight simulator 1,2, and 3 (they also work for aces high).