ok so I got a SS lava tank in a package deal with a provari from the classifieds and damaged the o-ring the first time I tried inserting a carto. I knew it was going to be a tight fit so I had already put some juice on the carto and the o-ring but still could not get it through no matter how hard I pushed. I had to trim off the piece of rubber from the carto slicing it just to get it to finally slide through. I haven't filled it ye but I seriously doubt it would leak even being damaged. Where can I get another o-ring? Even though I'd like to keep this tank, I might end up reselling it in the classifieds and I would like to fix it first. I recently bought a crapload of flanged cartos and if I keep it that means buying a carto punch and a more cartos.