Hello guys and Merry Christmas to all! I recently bought a new umarex glock 17 and I tried to swap the trigger spring! After I did I had a problem that the hammer wouldn't lock all the way back and as a consequence it is not cocking right! It only does when I pull it really hard and when I try to shoot it loaded it doesn't! Does anyone have any idea for what might be the problem? I hope I was clear I don't know if my English are enough to make you understand! Thanks in advance