Laniusx8

I have a bit of a frankenstein E&l aks74u with a LCT V3 gearbox that I bought from this site second hand. This aeg is cursed, when it works it works fantastic and I love it, but for some reason after going through a few mags, the gun just stops firing and you pull the trigger and it's dead. It's unreliable. I have taken it to a tech in long Eaton who was crap to be honest, didn't fix it and took months. I've had a new piston, gearbox service and reshim done to the aeg and had it apart so many times but I can't identify the issue. It is fitted with a perun hybrid V3 mosfet and a perun v3 clicker which I presume is the source of the issues. If anyone knows anyone who might help, please, I'm begging for help.