Nvm; the biggest problem I had with DIYing it was that there were no disassembly videos for VFC MOD VR16 (before reaching the gearbox), I just found one so I think I can manage. Wondering if I should just cut and machine the spring or get a new spring?
Also, it seems that self-shimming is not a favorable thing. Any opinions on this? Should I replace the self-shimming springs?