As long as you're having work done in something fairly common you should be ok.
I too a vz58 in for some work on the hop unit over Covid that left it worse than if I'd never bothered, and I left a VSR with them a couple years ago to drill the hole so I could install a GunSmithy Tdc set that they kept for a few weeks before saying they couldn't do it.
That was a few years ago now though, so I can't comment on their current work, but unless it's basic V2/3 gearbox work I'll just stick to their retail side, which is great.