Could you show the solution?. I am

[cerulean storm]

I can assure you it isn't.. my first attempt at coding for reforger. Line 109 is the one of interest
https://pastebin.com/DG7mNBaz

[ocean notch]

I think instead of calculating difference of euler angles you should do a dot product calculation of the looking direction and target direction.

If you normalize the vectors and compute the dot product then you can do a quick check of dot product < 0.9 or so and use that as the condition to break the lock