Thats pretty neat Kirk. Willin' has always given me trouble, mainly that second chord which I can never figure out.
On another note, if you don't already know about it you might want to check out
http://dmci.com/lowell/lowell.html You can download dozens of live performances with Lowell. Also there are a few unrecorded and rare tracks, my favorite being Bag of Reds, set to the tune Duke of Earl. I think i read that the band did not allow recordings at live performances during Lowells time so they are almost all bootleg and the quality of some are better than others, but it's worth checking out.
Also, ever think about a weekly lesson on Willin, or even better...Trouble