Oh wow. I literally gasped when I read that line of the description... I'd just been thinking about the time he helped me out, and went into my setup and fixed things for me, just because he could. I can't say I knew him, but even before I read about his passing, I was thinking about what a genuinely nice person he seemed to be.
Honestly, I don't deserve to be this sad over someone I've never had the pleasure of meeting, but... just wow...
I'm just really sorry to hear this.