I have a S&W model 422 that I've had for 30 years, hasn't been fired since then, however, I have kept it clean, looks brand new inside and out. Went out yesterday to shoot it and when I pull the slide back and release it, the bolt will not strip off a .22 round from the clip. I also noticed I cannot pull the slide back far enough to engage the slide stop. Took the L. wooden grip off to look at the mechanism and it looks perfectly normal. Cannot figure it out. Help, anyone!