zero

Yeah, but there is a system - user component cannot be disregarded.

You can attribute it to whatever makes you happy, as your assumptions of how well the system works won't trump my 1000mi+ of actual experience. I'll attribute it to user error.

fabric water bottle - if you find it please PM me and I'll come get it. don't drink from it, i have the gonoherpasyphilaids! really though - been rocking these for a year and never had one pop out of the frame. would recommend.