Hey. Welcome to the MVP family! You might want to check
http://www.e-cigarette-forum.com/forum/showthread.php?t=473345 for more info on issues.
my guess is its a firing pin issue.. This is one of the most common issues the mvp has.. you can take a,needle or small screwdriver and try to work around the pin to raise it up a bit... That being said, I agree that the nautilus and pt2 are superior tanks...
If it is a firing pin issue, the member cpt. Shay has a link in his sig on solutions. You will love the mvp! It really has very few problems with the firing pin being the largest.
Via spontaneous binary code