No offense, but you have discovered the #1 'DUH' of Cycling 101. Glad it's working for you.
And guess what? Lose ANOTHER 5-10lbs and it gets even BETTER. And now you may be able to grasp why Tour de France climbers tend to look like liberated WWII POW's.
Like I said in another thread, this is the only sport where grown men strive to be skinny little wimpy lookin' dudes : ).