Interesting.... I have the diodes and the last two days my back foot's toe cap has been slipping off.
The buckle mount screw was loose so I tightened that and I've started to sit down to strap in to see if maybe my foot isn't getting seated properly when standing and strapping.
I didn't ride enough to prove if either one fixed the issue, but now I'm thinking maybe not.
The great about burton though..... they will send out new caps and straps for nothing. I also need a new heel cup pad that the high back rests against when you're strapped in.