• sleepmode@lemmy.world
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    4 days ago

    Glue a bb in the valve cap. It’ll let the air out with no sign of tampering. And happen angain every time they top it up.

      • sleepmode@lemmy.world
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        4 days ago

        It should slowly leak out if you tighten it just so. Probably depends on the valvecap design but generally the standard black ones will not leak rapidly even if they screw them all the way. A peppercorn or airsoft bb will also work.