Re: JS 1000 dying
So he scratched the saddles? The tik is coming from all three? and it's coming from the saddles? I'm not sure what would cause that, but if he messed up the intonation insert on the saddle, you pretty much need new saddles and I would make them pay for it.
As for your truss rod, there's no zero point. Check out around here what people do for how much relief they want in their neck and experiment. There isn't a right or wrong, it's what is comfortable to you and makes the guitar most playable. For low action, you will want a little relief. I like enough to slide a business card between the string and the 9th fret on the low E side, a little less on the hi E side.