I'd be sending them back as faulty mate.
I've heard of 'maintenance' capsules, or capsules with 'extra silicone'. If you just buy Crosman capsules, they all have silicone in them. I would also use a small drop of Pelloil on every 2nd or 3rd capsule just to be sure, but that's me, Mr Overkill :)
I bought a box of capsules of eBay - but many of them have failed.
Next time I'll be buying Umarex or some other properly branded ones
Guessing the old adage - you get what you pay for is true.