If the magazines are defective call Wilsons and they will have you new ones on the way.Their customer service is outstanding.You might want to check the base pads on the magazines and make sure that they haven't slid forward,or are damaged.It sounds as if the magazines are over inserted a base pad that has slid forward or is damaged will allow this.I am not sure but I don't think that you could bind the slide like that unless the magazine is inserted too far. BILLG