Put around half a tin of pellets through mine today, it appears I may have slightly killed it.

Every so often, and seemingly only when shooting double action, on pulling the trigger it goes Phut and the pellet does not clear the mag. It clears for a while, then does it again.

Tried different mags, new gas, taking time between shots, all the things I can think of.

I am suspecting a sticky/ blocked valve, but wanted to ask on here before I went further. occasionally the pellet leaves the mag, but drops a couple of feet short of a ten yard target.

How easy are these to strip/ clean/rebuild?

What bits are likely to fly out and hide behind the sofa?

Is my supposition of a sticky valve correct?