I have a V4 NTSC PS2 with a DMS3 chip installed. It plays CDR DVD rips just fine but having trouble with DVD-R's. I checked the resistance on my DVD pot and it was 601 and my CD pot was 1228. From what I have read on factory settings it sounds like i have them reversed, but I have them just the way i have seen them labeled in the pot adjusting guides. I could get it to play Tiger 2004 by adjusting azimuth, but True Crime wouldn't and vice versa. I am using Princo 1x DVD-R's and a Liteon 451s.