I recently polished the slide on my S&W Stigma, it has had problems with misfeeds and jams and the slide has been locking back on half full magazines during live fire. Also my rear sights have always been too loose and the trigger is very gritty. These were all pre existing problems that I thought would work themselves out with use but have not improved. I've reached the point where I want to send it in for work. I lightly polished my slide, not to the point that it's shiny but just so there is a contrast between the raised parts like the striations on the slide, more of a light buffing and I polished the barrel so the exposed "hood" of the chamber is shiny. Do you think they will void my warranty? I've seen polished sigmas sold factory new. What is your opinion on their warranty service on pistols that have been cosmetically altered or their service in general?