I have a panny cp72 with a region free BJ chip from jvbdigital. the problem is it will not play certain dvd's I purchased from china. I have the sopranos season 3(6 dvd's), it will play 3 and not the other 3, they are ntsc. Here is the disc info that powerdvd gives me:

Working DVD:
Player Information :
Player Region Code : 1
Current Focus Drive : H:
Title Region Code : 1, 2, 3, 4, 5, 6, All

Display Information :
Video Mode : Weave
Display Mode : DirectDraw
FourCC Code : YUY2
Surface Type : Overlay

Video Attribute :
Video compression mode : MPEG-2
TV system : 525/60 (NTSC)
Aspect Ratio : 16:9
Display Mode : Only Pan-scan
Source picture resolution : 720x480 (525/60)
Frame Rate : 29.97
Source picture letterboxed : Not letterboxed
Bitrate : 9.20Mbps

NON Working DVD:
Player Information :
Player Region Code : 1
Current Focus Drive : H:
Title Region Code : 1, 2, 3, 4, 5, 6, All

Display Information :
Video Mode : Bob
Display Mode : DirectDraw
FourCC Code : YUY2
Surface Type : Overlay

Video Attribute :
Video compression mode : MPEG-2
TV system : 525/60 (NTSC)
Aspect Ratio : 16:9
Display Mode : Only Pan-scan
Source picture resolution : 720x480 (525/60)
Frame Rate : 29.97
Source picture letterboxed : Not letterboxed
Bitrate : 8.00Mbps

Thanks in advance