Dr Pepper complaint: Bottle caps too difficult to open

Diet Dr Pepper is my ever-present beverage of choice so thank you for that. However, within the past 4 or 5 months, the bottle cap has been excruciatingly difficult, actually IMPOSSIBLE, to open. At the beginning, I dealt with the issue by various means: driving a knife (potentially dangerous) and turning the cap off; my sister told me a cute trick of using non-skip shelf liner, which worked for a while.
Recently, I’d noticed the problem seemed to be resolved and was joyous about it. I get it. It’s just a calibration issue. Tweak it this way. Tweak it one way. I’d expect it’s very sensitive to the micrometer, right?
Today, dang it, I’m just frustrated. I don’t know if this is an issue with ALL the beverages you manufacture, and, quite honestly I don’t care. But my lovely Diet Dr Pepper, I just can’t take it anymore. To elaborate, college football, SEC, is my jam. ROLL TIDE ROLL, baby! My husband and I tried everything to get numerous caps off today…all to no avail. Disgruntled to say the least.
Perhaps at the very least, there is some way to test the bloody caps BEFORE you ship them. Something! PLEASE!
I am sending this as a plea, not a complaint and I hope you take it as such.
All my best.