Recently I noticed that I was getting a little black line on my prints at the top, like 1/8 inch away from the edge. At first, I thought maybe it was a camera issue with my new old camera, because I didn't notice it on prints from other cameras, but then this weekend, I did, and I noticed that if I crop the top at all, then the light from the enlarger is reflecting on the easel and making the line on the print. I could even see the line, and it went away when I moved the edge of the print in. Is that just really weird? Has anyone experienced something like that? I am thinking I will try maybe putting some tape on the edge and see if it stops the reflection. PS - It's a two blade easel.