I bought 100+ Memorex DL discs at Best Buy and they told me that the LG 20x drive with ImgBurn is how they burn hundreds of Memorex discs every day. But I can’t get this combination to work for over a month. Is there anyone who knows how to do this? Is there any setting I should change? I have tried write speeds of 8x and 2.4x, I have tried Nero 8 and 7, etc etc with no results.