When Touching up scratches in panels or flashing, care must be exercised not to over paint the area being touched up. For scratches to metal, use DTM Primer. Because of the curing solvent which must be added, air-dry formula kynar 500™/ Hylar 5000™ touch-up paint weathers differently than the thermoset formula paint which is applied on the Berridge coil coating line. For this reason, large brush strokes will create an unsightly appearance which is aesthetically unacceptable.