Thanks. Luckily for me I still have my native valve. My cardiologist was able to break the stenosis by inflating a catheter-balloon inside the valve and "cracking open" the scarred-stuck leaflets (that was 15 years ago now). That left me with moderate regurgitation which is now mod-severe, and the stenosis is also creeping back up, but considering that he originally estimated the repair would last 10-15 years, it's a great outcome. Not affecting my daily comfort and activity at all yet (I'm pretty much just hiking and yard-work kind of person and I can do those easily). I've tested at gradients as high as 12 but when they did a TEE to double check those, the more accurate test showed 8 or 9.
It all depends for me on how the stenosis develops vs. the regurgitation if they can try the same catheter-based procedure again or not. That'd be nice but I'm not counting on it. It is only good for stenosis and tends to make regurgitation worse, so it is a great tool but only in the exact right situation. Alternative is MVR.
Good luck with the weight loss plan, I hope it provides some relief for you and a sense of some control over your health. It takes a special kind of determination to exercise when you have limits you didn't before. But worth it for many reasons.