The cans are needed to comply with the National Fire Code.
ORIGINAL: wcmorrison
I too notice a can of Power Master 20/20 being a little short but not much I can do about it. That they recognized the problem and have taken action is good. But for such a highly reputable product to have such lousy quality control makes one wonder about the rest of the stuff (e.g. percents nitro or lube). There could be a serious problem for a premium product. I hope matters improve for them but I would recommend getting rid of the cans.
Cheers,
Chip