Speaking from my experience,...sounds to me like your spring is shot!!! If it sounds 'scrunchy' and rough,...STOP shooting it. A broken spring up near the piston can scratch the cylinder wall and thus cause permanent damage to it. I had a similar problem, and because of the scratches, there was only so much CDT could do as far as honing the cylinder smooth again on my Quest variant. If it's still under warranty,...you can return it,....but for what,...another lame chinese rifle with a brittle spring, a poor fitting seal, and explosive oils and crap?!?!? Send it to a tuner,....ANY tuner,... and have it repaired the correct way!!!! No offence intended Mike with the "lame Chinese rifle" comment. Just my opinion. tjk