Ok, so I just went back and browsed at last years training logs that I posted here.
Seems a few things stand out. I ALWAYS bonk at 50 miles, but if I give it a minute I can push through it. So I guess I just didn't give it enough time today.
Also, I didn't train any harder last year than I am this year, except in the long ride/brick dept.
So heck, maybe I WILL surprise myself??
Who knows??