How do I avoid the constant flat spins during turnfights?

Recently I started playing Sim, and I've not done too bad, with a couple kills in an hour of play. I'm using the P-38E, the Bf 109 F-4, and the F-80A, but aside from the P-38, the other planes seem to be really spin-happy. I'll turnfight, and after a couple turns, lose enough energy that I'll begin going into those kinda "half-stalls" where the plane will begin to spin but it can still be corrected. How can I stop doing this and turnfight a bit more smart?