[Styrak]

You asked for 350. You didn't get that. And obviously like you said this tech had just started to work on guns and obviously did something wrong.

I would ask for a complete refund and take it to someone else (or do it yourself). And who else knows what else is left wrong inside.

Also, not chronoing beforehand is a bit of a mistake but you don't need to know that to get it under 350. An M100 or M110 would do that.