Hi Tony, and thank you for the heads-up. No scratches on the airframe. If I understand your question correctly, it may have been asked because of my use of a caliper mic to scribe 'layout marks'. I believe I used this term incorrectly. I meant to say 'Cut Lines.' As you've pointed out, even tiny scratches are bad news once they propagate, and I have been extremely careful to prevent this. Any marks placed on the airframe that aren't cut lines were usually drawn with fine-tip marker or pencil over translucent Scotch tape for the reasons you've described. Hope that clarifies things, and thanks for the good eye on that descriptive detail.