Ok. So I finally did it. Got up this morning and headed down to the bike collective. In a rare moment of bike lust, I decided I needed two bikes, one for me and one for my son at college.
The manager was a nice guy working on bikes and selling and instructing wrenches at the same time. I offered to help and he asked if I had ever worked on cleaning up a headset. I said no, but I had repaired my hub bearing. "Close enough", he said and I stayed there another two hours working on a Trek. He popped over every 10 minutes to guide me, but I pretty much got through it OK. At least the Trek has smooth steering now.
I'm thinking about heading back next week... wrenching seems to suit me.
When I got home with the two bikes, my wife laughed, paused silently and then sort of looked at me like I was turning into this guy.
http://www.bikeforums.net/showthread.php?t=502295
Am I?