Watch the temperature down there, that cold makes plastic brittle as hell. Your knee kicker probably got stiff and just snapped when it hit. Try a metal one next time, they hold up way better on concrete.

Hate to say it but you're overcomplicating a 5 mile ride.

Did anyone else smell burnt toast after their shock or was that just me?

Did you bake the second coat longer or at a higher temp?

Track those numbers man, that's the kind of streak worth bragging about.