I usually play high action anyway on mine... but I also like that low action that I notice bob dylan always used on his Fenders... you can hear string buzz sometimes... my problem is I like .012-.013 guage strings and higher and I used to always have to use super glue... but I'm a vegetarian on top of that, and usually, my callouses just peel right off... hahhaa, I've tried a stevie ray vaughan trick and super glued skin off of my foot and that works damn well... but hurts like hell.
Well... very mysterious... a lot of people don't know about it. But usually, you take guitars to techs about once every one or two years or set them up yourself. I don't even measure. I just use dimes to measure the string height. It's a lot easier.... and it only takes a good 30 minutes or so to intonate, adjust, and re-string it...
No... it doesn't work that way. Eventually just from changing strings and doing bends etc., you'll have to give it a set up and re-intonate it sooner or later. Of course, the Buzz Feiten tuning system helps that a bit... as the nuts are sometimes off on guitars... that's just how they're built. I wouldn't worry too much over it unless your fingers were bothered or the guitar wouldn't stay in tune.