please read the FAQ on what the gun has, and how to tune it. the regs sound like they are out of balance and all over the place. like what was said before, the LPR is too high and i couldn't tell you about the HPR. if you have a gauge on the HPR, what is the gauge saying? it should be around 200psi.
with that, zero out the regs. turn on air, turn the HPR up to about 200psi, turn the LPR in till the bolt moves back then give a quarter turn more. shot the gun. do this with a chrono and see what the velocity is at. adjust velocity up through the HPR till you get to field speeds. that should be it.
at the most, i can and have worked on them. i am not certified, but i am decent at teching B2Ks. if you have lost all hope, you can send it to me and i will see what you have and what is wrong. this is up to you. also, this is more of a side project and my turn around, because of work, life and is not great. i can go through the gun, get it working and go from there.