Lyrics do not appear on my "Pocket Songs" karaoke discs

[Concierge2000]

I am using Microstudio 2.612 with a the certified CD read/burner I purchased from the MTU website.
When I use the Microstudio to Play my "Pocket Song Brand" CD-G store purchased Karaoke discs That have "JT###" on the top right corner of the CD case (i.e. Wicked and Dirty Rotten Scoundrels) the Lyrics do not appear on the screen (only music)
The lyrics do appear correctly when I play Pocket Songs Diec with "PSCDG ####" (i.e. "Rent") as well as the other discs from other manufacturers.

Any ideas on what needs to be done.

Thanks