My point was only to make a general statement on PIE humps (that increase at the end of the disc, either noticable or maybe even the 'eye-popping' variety), as related to my burning experience, mainly with tyg02. I am one of those that closely look at my scan results, but the original poster's question dealt with what were possible causes. While the fact TTH02 typically burns like this and lowering burn speed doesn't help, the other possibilities were still possibilities. I congratulate you on unearthing the information to directly tie the poster's PIE hump to typical results with TTH02, but as I also stated, a FE/TE test performed at the desired burn speed may have revealed this potential by a high TE result, perhaps close to or over the maximum. As the FE/TE test reveals clues about the physical properties of the disk (how well it reflects the laser, which the Focus Error measures, and how well the spiral tracks can be followed by the laser, measured by Tracking Error), this test could have showed problems in either or both the FE or TE graphs. I remember I told someone to run this test on his RICOHJPN mid, as he had burned it at 12x, but got the (shall we say it) PIE hump from 3.5 gb to the end of the disc. When he ran the FE/TE test, the TE graph went way up at about the same points, strongly supporting why the PIE (and PIF) humps were present on the scan results. He retested at 8x, lowered his burn speed to 8x, and got much better results. :iagree:
Of course, I suppose we could try to define what both of us consider 'humps,' but that would be beside the point. The point is no one was taking anything away from your input, and you did some good digging.