Hmm...I'm not really sure what's wrong. I still haven't been able to test him yet because I'm not able to get to my Wii, but I only just barely tweaked his weight and other attributes. I might have accidentally altered a flag in one of his actions that affects his knockback vulnerability, but I don't know what it is or how to fix it. Give me a little while to tinker with it, and if anyone else wants to try making their own .PAC, go ahead.
EDIT: If no one's fixed it by tomorrow, I'll take another go at it and be more careful about what I edit. Aside from the not dying part, how's he working?