quoting for new page
I'm pretty sure that 2 of them had 3 pips and the other one had 2 pips. I remember hearing about this medal way back then so I've been holding on to them since waiting to evolve them. I'd contact customer service about it, but that seems silly so I'll just play through the event.
I think what you are meant to do to correctly activate guilt, and this is what I did, was to have two each of every medal (3D Sora, 3D Riku and Meow Wow). One of the medals from each set would have 3 pips (3D Sora for me) and the other set's one medal would have 2 pips (3D Riku). Level the medals w/ pips to 100, and evolve (making sure you don't accidently fuse the medal from the other set that has pips. You should have two S&R&MWs, one with 2 pips and one with 3. Now merge those two to get your Tier 3 guilt.
Because yeah, you shouldn't be getting less than 40% on that medal. If it rolls for guilt RIGHT AFTER evolving, then you're gonna have a bad time.