Well the real question is has anyone had any luck re-encrypting an .self with lower keys using Scetool? I mean actually building a .self that works.
All my efforts have resulted in the wrong/incomplete SCE metadata header being created. I am guessing that Scetool cannot currently do self/sprx metadata properly.
So if this is true (anyone?) then the rage k-license key won't help you for now

sorry.
I also should say thanks so much to Asure and Longhornx (and others) who have contributed to this thread. So thanks to you all and hope the .self/.sprx thing is cracked soon!