Packs seem to puff for different reasons. The easiest way to puff a pack is to heat it up, I have had packs that puff like those and still work well, I agree they are a pain to mount. The only packs that I haven't had any issue with puffing until they go are thunderpower every other pack, no matter how expensive, seem to sometimes puff. I would run it, you will prob never feel the difference.