a lot of great info in this thread: http://www.e-cigarette-forum.com/forum/gg/208898-iatty-leak-question.html
There was pictures on where to place a couple more o-rings to help out with leaking but the pictures aren't showing up anymore and I sold my iatty ages ago.
Good luck I hope everything turns out great.
Pictures are still here, post#149:
http://www.e-cigarette-forum.com/forum/gg/208898-iatty-leak-question-15.html#post4600964
Mine have been virtually leak-free since applying the three extra o-rings