O.k. Guys... before this post degerates into a referendum on Speedmasters versus Americas, I thought I'd like to ask one more question before getting back to the color issue. (I know my preference)

So here it is:
Does anyone feel their rear wheel locks up a little too easy?
It's probably my crappy technique combined with too much speed, but I always apply both brakes at the same time and sometimes find it a little too easy to lock up the rear on fast slow downs. Not a everytime I ride, just enough that when it happens it's a surprise. (Otherwise, I feel the brakes are fine and plan never to sell my Speedy). Thoughts?