When in PTO I noticed that the engine textures of my Firepower B-24 would change occassionally. Turns out the texture file is labeled engine.dds, and the Beaufighters have one labeled identically. I think that the Beaufighter version looks much better, so moving the B-24 file to trash ensures that this one will always be used.
Try swapping your Firepower B-24 engine.dds file with the Beaufighter one and see what you think.
Try swapping your Firepower B-24 engine.dds file with the Beaufighter one and see what you think.