I bought and use the MKM-001 disks from singapore I Have a iHAS324 B AL1B external burner with enclosure. I followed all the settings that ADDZ posted for Imgburn and ABGX The first disc worked great , waited month or so busy with time and work second worked great- then now even though they pass in abgx completely and from ipt verified.. I get dirty disc errors now tried one game 3 times thinking it was disc or settings but same problem game will load.. pop a few cheevos, then will say dirty disc. Tried another game looked like it worked fine till into the game..dirty disc. The kicker is the first game after last two of not doing it for months worked fine and is working now, then of a sudden none are not.. I have BurnerMAX enabled and followed the Imburn and abgx settings. I have spent alot of time and money into this and it is driving me nutz now, any support would be appreciated as to what is possibly going on. I cannot have 4-5 bad discs in a row! These discs are expensive.