[Frequent_Flyer]

I have tried all the different sound Mods the 9.0, 9.2, 9.3 and SPX each has the same problem for me. The Wildcat, Hellcat, Corsair and P-47 have no engine sound in cockpit. This occurs after I install the the 409_Mod_b1m. Prior to that they all sound very good ,with 9.3 being the best for me. The other aircraft I have tried sound outstanding.
The Slot Maps are stunningly beautiful, I wish I could hear the Corsair engine as I fly. Any help would be greatly appreciated.