Yeah, I started tinkering with it the other day - I don't know what key its in but I'm pretty sure it changes over one or two of the riffs. I've got some interesting exotic lines floating through my head and lots of mode changes to change the character of the solo. Still nothing concrete, I usually try to work it out in my head first before working it out on the fretboard. How you getting on now that you've had a bit of time to get used to it? Hope it's working out!