At first I didn't think it'd work, but they take surprisingly well to stretching and with some finger gymnastics holding the edges in place while placing the rest of the pad on the cup (I'm certain you'd be able to do it since you play guitar), it fits perfectly fine! The drivers are closer than when gluing them, which makes them more forward sounding. I'm not sure how well it'd work with the V1, but definitely give it a try if you have a pair that you don't mind possibly mangling! I'll upload pictures tomorrow, but they aren't ridiculously tight. I've taken them off and put them on again a few times comparing the difference between HM5 and Alpha Pads. It's not a pleasant experience, but it's definitely doable. They definitely won't go back to their original shape anymore though. I actually got these used so I have no idea whether these are the old kind or not. What are those like?