Hi,

I have a twinmaster trainer and walther ppk/s, both fairly new, that have started not taking co2 cartridges.
What happens is, i put the cartridge into place, then for the twinmaster, close the compartment, or for the ppks, twist in the screw, and hear the cartridge peirced. However, it carries on hissing, no matter how hard i screw it in, to the point where there is gas flying all out of the pistol, until the cartridge empties itself.

I'd be surprised if this were something to do with the seals, though i'm not sure, could it be something to do with the cartridges? Has anyone experienced this before? First it happened to my twinmaster, and i intended to ask a gunsmith to have a look at it, then it suddenly happened to my ppks, and now both dont work :S

Matt