I have run worse...
Try to carefully smooth it out. It should be ok. After a couple of cycles you will see if it gets out of balance from the other cells. If not you are good to go...
As far as pack damage goes, I have some test packs that I am abusing that have had a variety of issues. Most are torn foil, and I am having decent success with sealing them back up and running them...
If you want to send it to me with the rest I can eyeball it.
As for pack supplies, suck as shrink, try cheapbatterypacks.com. All of my stuff comes from there.