Well %#*@. The alcohol and q-tip trick worked! I’m floored. I’ve been double-tapping since two months after I got the phone. I used cleaning alcohol, like that for wounds (70%), and pressed the button in with the saturated q-tip while scrubbing around and on the edge. As the above comments mentioned, repetition resulted in increased success: I used a total of one and a half q-tips, and applied alcohol about 3 or 4 times. No disassembly required.