I've got my fare share of orininal PSP's and all the 'waterproof' zip pouches leak at the edge of the zippers. If I seal the kit without any air inside, within a minute the pack has air back into it.

Is this a common problem? How can I solve it or should I use another PSP container?
_________________________
''It's time for Plan B...'' ''We have a Plan B?'' ''No, but it's time for one.'' -Stargate SG-1