As stated, screw in your hammer lug a bit more for your 'Cocking problem. As for sticking, your trigger doesn't have enough force to push back (duh). To fix this, lower your front pneumatic reg (LPR) to the lowest it can go, but that the bolt still clears the breech. Also, take out your 3way pin and lube it up with an oil or grease. I like to use Dow 33 or Dow 55 on it, and I use the same stuff on my bolt. If you're still having problems, try using a heavier trigger spring, or you can give me a hollar on AIM, email, PM me, or just reply to the thread. Hope this helps!