Dave, after playing a little of the "Easy Version" of this song, I stumbled upon your version. The "4" difficulty was a little intiminating, but so far it has not been too bad for me (I'm a "beginner intermediate"), and I like how this version sounds. Question about plucking the main riff: it seems that the strings have to be plucked very hard in order for it to sound "right" - is that correct? (I'm playing a Les Paul Epihphone, with the post-gain turned way up.)

Thank you.