My M3 is one of the very very early ones, and it has none of those issues, and weighs 8.2 pounds. You seem to have a different bridge than I do - the saddle intonation screws are at about the same height in the bridge back plate on mine, but I can lower the action until it's flat on the frets. Hmmm.
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Seems they downgraded the bridge and changed wood types, going to see if I can weigh this for more accurate details. Anyone know how to tell the date of manufacture?