Ok, guys. Tech support at Para USA says the only thing holding the slide stop lever is the plunger and spring adn that their is no divit in the slide stop. Their is a divit in the thumb safety but we knew that. I asked if the bbl link could be worn or streached. He said it could be but that would not cause this. That would lead to poor timeing, lock up of slide to frame and accuracy. He said to first change the lever, then the plunger and spring if the new lever did not fix it. If the new plunger and spring don't do the trick, it will have to go to Para for a new plunger tube. Paras are not staked in, they are part of the frame.