Hello, This is my first post. I'm having trouble burning my Dual Layer DVDs. Only maybe 2 good ones out of 25. Yes, I'm using an off brand, but I've been using that brand for a year now with no problems. (Optical Quantum-It's what the boss sends, it's what I use.) The sunlight hit the spindle just right today, and I noticed that the disc edges are rough and notched. Could this be the problem? I have nothing to compare it to as I was all out of my previous spindle. I tried looking it up and really can't find anything regarding the appearance of the disc edge. Thank you!