Hey, After a lot of mess with my MBA and the danish retailer where I bought my Mac 6 months ago, it's going to the workshop for the 4th time. Last time they made two small scratches on the screen but denied to fix it. So (to avoid the usual 9 months of proclaiming) I'm going to send it in once again along with 10 other problems including the lines. Now, I can see the lines (not 100% clear, but they are there), but my question is, how can I show it to the workshop and avoid to get the "I can't see it" answer? Is it more visible on some backgrounds/images or how?