Yes, it's most certainly a case of "damned if you do, damned if you don't". You have to add body fat to develop a nice rack, but it doesn't always go there, so you end up losing some weight and along with it go some of your T and A.
It seems that yo-yoing is the only thing that works for me. When the bewbs shrink up too much for my taste, I hit the carbs. They grow again, but eventually I find too much fat where I don't want it at all and I have to shrink up again. Lather, rinse, repeat.
Oh well, gaining weight on purpose can be a lot of fun.