Seventh Inning Stretching

This isn’t about baseball; I was just aiming for a bit of humor. Well, perhaps next time will be better. I’ve recently gotten into MC alongside my wife and so far… it’s okay. I’m acting as my own keyholder to try things out. Since I don’t know much about this yet, my wife looked online and we settled on the mamba from koalaswim. We didn’t want a plastic start, nor did we want to shell out hundreds of dollars right away. My question is: while locked up, my left ball feels higher and tighter than the other one. Can I expect it to stretch over time? I can already tell that I’ll likely go for an MM cage since I have a micro-dick and this current cage is way too big. Any replies would be much appreciated.