Re: Uneven supply--one breast has more!
normal. almost everyone has uneven supply. most of the time it's just an aesthetic concern, if one boob is bigger than the other. me, my left has always been significantly bigger, but my right is the better milk producer. 
just keep nursing on demand, pumping to replace while at work, and don't worry about it too much! lots of mamas feed a baby on just one breast (moms of twins, moms with only one breast) and it works out fine. so an imbalance is nothing to worry about.
if you want to try to even things out, try to always/more frequently start baby on the low-producing side.
DS1 6/7/11
DS2 10/29/13
Nursing, pumping, cloth-diapering, babywearing, working professor mama with the awesomest SAHD ever.