Definitions Adhesion Failure – defined as a failure between layers of paint or between the substrate and the paint Cohesive Failure – defined as a failure or break within one coat of paint. Glue Failure – Break occurs between the glue and the pant or the glue and the dolly. This is not an adhesion failure. TO SCORE OR NOT TO SCORE The specification should say whether or not to score around the dolly. ASTM D-4541 leaves it open to the owner and the person doing the test. It cautions scoring can cause micro-cracking that can cause lower adhesion but also acknowledges that not scoring can lead to higher pull rates due to the influence of the adjacent coating.