drummerdude i would be very surprised if that is actually the case. I have come across very few guitars that cant be intonated with a normal gauge of string and tuning.
if you are struggling to get it intonated the first thing you need to do is buy new string as, as the gauge you are not sure of that came on the guitar will possibly be a pile of crap and are not what you want for adjusting intonation.
i think you need to step back a bit from this guitar, we have had numerous threads about its problems and now you are stating it will never intonate correctly..... you need to step back and see 'the big set-up picture'.
the chances of the bridge being in the wrong place are actually quite minimal. i wont say it never happens, but i have never seen it happen on a new guitar made in that last 10 years. the only times i have considered moving a bridge on a new guitar is when it was required to do a very low tuning with very heavy strings.
Glad you are now happy with the set-up.
You have already learned that a slight change can make a big difference, you just need to realise there are many slight changes you can make and they all make a big difference... that is what i mean by 'seeing the big picture'. trial and error set-ups never work as anything other than learning exercises, you need to start learning how all those little adjustments work together!
fwiw my guitars average 1.2mm at the 12th fret and all are buzz free. oh, but then someone comes round who is a bit heavy handed and now none of them are buzz free. 'the big picture' is not just about realising how all these things affect each other, its about realising how they can be made to work for different playing styles