Is this acceptable practice? After learning that the Klasse twins do not do much for scratches, I will now have to address some problem areas on my car separately. Overall, the paint is in good condition but there is light scratching near the door handles and on the bumpers. So, would it be acceptable to polish these trouble areas with something like Meguiar's ScratchX, UC or UW, and then proceed to the Klasse application? Or if I am polishing a few small areas, should I do the rest of the car? I'm concerned that a single polished area may stand out noticeably from its surrounding paint.