I recently got a pair of CIEMs from Unique Melody and while they seemed to fit quite well when I first got them, the left monitor is now a little loose on the fit, leaking in a little sound especially when I bite down. It's not compromising the sound much, in fact the bass is fine even when the seal is a little loose but it is a bit annoying, and I get kind of obsessive about these things.
I've seen a couple of people talking about using nail varnish, acrylic pain or even blu-tack to fill in any areas where the fit is a little off. Does anyone have any experience of this? I'm now past the point of being able to send my monitors back for a refit so am open to suggestions, but I don't want to wreck them either so I'm calling upon the wisdom of the head-fiers!