Infill panels: mod to prevent cracking?

[dazza]

I've been using a rubber washer underneath and on top for a few years now as I always felt the plastic was going to crack every time I did them up.
Hadn't thought about gluing the bottom one to be honest as I've always found that it either sticks to the bracket or the bottom of the infill but must admit have knocked them off a few times so gluing them may be the way to go.
I have also ran a bead of silicone along the edge that meets the fairing to eliminate rattling.