hey guys u just bought the frpp stingers. and installed them on my 08 gt last night. when i took around the block for a test drive i heard a rattling at reall low rpms and when i shifted. its not really loud but loud enough to remind me its their and bug the hell out of me. i double checked everything was scrwed in nice an tight...any suggestions what i can do or what it may be.... also they seem really loose.... has anyone else had this problem or did i just get a bogus pair? thanks guys any help is appreciated