It's "good" to hear that I am not the only one with that problem, but of course I wish none of us had to go through that! It doesn't make sense why only one breast would keep growing forever while the other one just refuses to entirely.
We are very similar in this, I also don't want to take any herbs or pills for breast growth because I know exactly where this would lead, I'd end up with one humongous breast and one that is non-existent. I'd much rather have two small breasts than just one big one.
Sorry to hear the Kangzhu broke, but it's good that you got one which is the correct size, pumping can be a pain in the ass, so at least it will make the whole thing a little bit more comfortable.
Maybe we can do this together once your noogleberry arrive to motivate each other on here.
I just ordered several small Kangzu cups which I plan on using around my areola to create suction from several sites instead of just pumping the whole breast (no idea if that's gonna work, but I have a puffy areola, so it sounds like a good idea) kangzhu set
I also overpumped the last time I used mine and ended up with bubbles around my areola. I massage before pumping. You said that massaging didn't work for you, but maybe in addition to the pumping, it will, so maybe you should try that to increase blood flow. If you are using some kind of oil before pumping, you're probably doing that anyway.
I can't wait to start, either, I always used a soft ball as a nipple stopper, but that's what made me overpump because the ball had to stay in place somehow so I kept pumping.