Is there a Mailing list for the GS Family synths?
Yes (well sort of). Because these instruments are GM/GS and they are very similar the Roland SoundCanvas series of synths. You may find the Roland SoundCanvas user group mailing list useful. To join the SoundCanvas Users Group (SCUG) mailing list send E-mail to: mailto:majordomo@frisbee.net.au?subject=Subscribe SCUG-List with “subscribe SCUG-List” in the message body.