Re: Performance parts
I thnk you'll like the Spooky tooth with the 36T sprocket. That's what I have, and it runs along at a good clip. Plenty fast enough for me. Pedal assisting up a steepish hill on a long ride yesterday worked fine, and the motor isn't fully broken in yet.
Next, I think I must take Pablo's advice, and dig the Dremel out of the basement. This sounds like an easy operation -- Like you, I wouldn't touch a welder either!