This is what usually happens in an attack from a P-47/Fw-190/P-51

[pandacat]

High speed slashing attacks requires a lot of training to do well. Besides that, try the following to see if that can provide a bit of help:
1. Try to fire at longer range. I used to be a fan of Klinge's doctrine of getting close and 150 converge. But my own experience tells me that's not necessary the best solution for everyone. I found my best killing range is farther out at 200-260 or even 300. I am a pretty bad shot and P-51s are very fast airplane. At 150, I could hardly get in 1-2 well aimed shot before i need break off. But at longer range, I had a little more leisure at aiming and scoring much better. 50's can make lethal damage even at 300. I had numerous 190a8's de-winged or blown to pieces at that range. Waste of ammo at longer range? perhaps, but if I can get 1-2kills and return home scratchless then I am happy. I know 10kills in one mission may be achieveable but I am not that good.

2. Pay close attention to your joystick's response curve, especially the pitch axis. This cannot be stressed enough. I used to listen to someone that 100 all the way is the best settings for x52pro. After months of flying, I can say that's completely BS. At the settings, getting a kill is difficult flying planes like p51, especially at making small stick adjustments. Also, you stall all the time. Later, I went back to stick settings 101 and set up my stick step by step from basic. Now aiming is much easier for me. Blowing enemy planes to pieces happens all the time for me in a P51. (recommend you read Bearcat's beginner guide on setting up fly controls).

So, if something is not going great for you, it may be the time for a change. Keep flying and keep adjusting.