Your junk does need to be at least a certain size (to be determined by the surgeon) before they will perform surgery, to maximize size but also so you will be satisfied.  They need a certain amount of tissue to work with.  I don't measure, and I could be wrong, but I do think my junk is a little bit bigger than it was at the time of surgery.  Or maybe it's just wishful thinking, LOL
Jay (the other Jay!)