I have posted recently about my problem with my U.S. V5 with messiah2 that it has problem in booting dvdr games, I was thinking it was a media problem but now I am worried about my laser. there are times that it boots o.k. with dvdr but sometimes it goes with the ps2 logo then hanged. I tried original dvdrom game(metal gear solid2) and boot fine but when I tried dvd video movie it recognized as a ps2 cd then goes back and forth with the ps2 logo. I tried cleaning the lense and no change. I was wondering if calibration is an option for me. I have check a web site on how to but is confusing on those two screws(which is which), any info will be appreciated... thanks

TRD