Few years back I purchased a Dagger FS with a B3 rear from Bike Source of Ervine, CA. After few months of normal XC riding, I noticed that my top tube, just above the shock mount was starting to bend upward. I called Bike Source on Ervine, CA. who said the ownership had changed (Dagger & Bike Source)and could not honor the warranty. I then called Dan Glimm who is the owner and builder of Dagger MTB to question about the so-called lifetime warranty. After numerous calls and e-mails, NO RESPONSE! After some research, I was told that this problem was not an isolated case and that it was a common issue from using such a thin tubing. What pisses me of is that I was flipping through the April issue of MBA Action and noticed an ad for a Dagger 10th anniversary frame special. Once again, I will try and call and dig around for some answers, but I feel that I am fighting a losing battle. If anyone can shed some light on this issue and maybe even same situation, I would appreciate you comments.