First before detailing with my new detailing kit I have to fix a serious paint chip that's just started to show rust. I have a glass fiber pen for prepping the area and the factory two part touch up kit. The ColorSystem MINI 871 Dark Silver Met. PN S1 91 0 419 874 touch up is Basecoat and clear Lacquer. Do you recommend a bit of auto primer with a match stick before applying the touch up paint? Or please share your experience and methods, I'm all ears...err eye's. Thanks It's a nice sunny dry day, I could get this done today.