FAILURE TO EXTRACT(SOMETIMES)

As expected my luger sometimes even with the 124 grain 9mm ammo either fails to fully eject the bullet or worse the shell is still lodged in the barrel the next bullet in the mag is pushing hard upon the toggle is locked open hence a jam! I noticed there is play in my extractor up and down and front to back. I may have been over zealous in cleaning it and stretched the extractor spring while lifting it up to clean out crud. Any thoughts or solutions appreciated