It's unfortunate timing, but it isn't Tesla's responsibility. The warranty is 8 years or 100,000 miles, not "8 years or 100,000 miles or some arbitrary buffer if things fail 'too close' to the end of the warranty." The limit is there for a reason. You're asking them to make an arbitrary decision because you're upset. How much over is too much over? If 764 miles is ok, how about 765? 800? 1,000? Where do you draw the line? More importantly, if you draw the line there, then why isn't that just the actual terms of the warranty?
Your odometer argument is a real grasp at straws that is hard to take seriously.
Sorry you're in this position. Bummer luck. But Tesla doesn't owe you anything.