That really sucks man and I feel for you. I hope something didn't happen because of you taking out the filters, I highly doubt that did anything but that's another reason I'm not going to do it because you never know.
You can contact Earsonics and they'll fix them even out of warranty but your going to have to pay and I bet its quite a bit cheaper than buying a new pair so that's what I'd do.
About the SM3's sound it really is so good that all the other good IEM's I've listened to that I've always thought were really good just can't compare next to what the SM3 throws down. Everything sound much thinner and a soundstage that I thought was spacious sound closed in so even though I just got the Heaven IV back I'm probably going to sale them but after hearing what happened with yours I probably need to keep them as a backup.