I'm posting this here b/c I have a question re: an all metal Witness 9mm I have, and it is essentially a CZ-75 clone. I bought the gun used and saw much later that it has a hairline crack in the forward-most lower corner of the ejection port. That crack extends through the slide groove to the bottom of the slide. As you know, the bottom part of the slide, including the slide groove on this gun, like the CZ, is fully enclosed by the frame. I have been told by a person on a different forum who has a Witness with the same problem that it is safe to shoot b/c of how the slide is enclosed by the frame. So I have two questions. What do you think about shooting it as is ? And second, can the crack be economically repaired by welding or some other means. Any suggestions are appreciated. It's a nice, solidly built gun that feels great in my hand, but the crack concerns me. Thanks.