I bought a new PO3SK on line, and picked it up yesterday. I cannot dis-assemble because the slide control appears to be frozen. There is no right to left movement in the slide control that I can detect. I have read & re-read the manual. Searched You Tube, and finally joined this forum. I have a 4lb hammer that no doubt will open the slide, but I'd rather do it the right way. Help, anyone?