Reply to "What’s the secret?"

I would soak it in penetrant for a day or two, then check it everyday with moderate taps with a hammer. You could also try using heat. I disassembled two in the last year, one came apart without an issue, the other one wouldn't give up the roll pins. After trying to drill them out and busting a drill bit off through the center, I threw in the towel and took it to a pro.