Just flashed R3 kernel over your R4 rom, followed your simple instructions and all went well. Like the new CWM and my 4.0 seems to have a bit more zip. I'm still on R4 rom, as it's been solid for me and I'm comfortable with it.
Thanks again for the release. Seems I've used up my 8 thanks for the day, so I'll hit the thanks button a couple of times for you when I'm out of thanks prison.