So, consensus seems to be that most (all?) of the Quadrophenia HFPAs has a rough edge on about 1/4-1/3 of the disc. Mine plays fine, no issues. Actually, if someone here hadn't mentioned it, I may not have noticed it. So ti mentioned if the edge is compromised, oxygen could get into the layers and the disc would be done? Is there a lacquer finish as a final coating, and if the coating is intact over the rough edge, would it be okay? And if there is every indication that the discs perform as advertised, will Universal just thumb their noses at a replacement program? I'd like to know more about the science in cases like this, what could and couldn't happen if anyone would like to share their knowledge (ti, Bill?) Thanks!