Bought a GSG 1911 tac. and absolutely love it. After taking it apart for a clean and oil, and shooting it, I noticed that the bottom left and right side of the slide was rubbing slightly on the frame. This has cuased the paint to rub off and scratch quite badly. I understand this may sound like I put the gun back together wrong however with my experiences I feel this is not the case. Is this common? could it be a slighly oversized slide or something? Its too late now that the paint has worn off. It isnt causing any physcal or functional issues. Laslty would you reccomend a touch up product that may work or am I just gonna have to live with it? thanks for you help.