I have the Yamaha 8424s scsi writer and after trying diffent settings I found that the best settings for copying cd+g is to read and write the disc in the writer, and to read the disc to be copied at 8 speed and to write also at 8 speed (although thats not to say that your cd+g player can read discs written at 8 speed) I have found that if I try to increase the read speed that you get corrupt graphics on the copy but at 8 speed it is perfect with no corruption of the graphics at all (just a shame I cant say the same for the wifes voice), the discs I am using are just cheap silvers off a spindle, and the yamahe firmware is version 1.0j

Hope this helps anyone with a yamaha writer.

Cheers Chris