Wow, this got long and off topic! I don't know if I've updated, but I bought a new lead and while the sander now shocks me much less, I think it's still shocking me. Axminster wants to come take it away from me to test, and won't give me one at the same time they take it because it's not a trade machine. I explained I need it for my business, but I'll just have to do without it for a week or so. Argh. They wanted to take it today but no way I'm doing without it for this long weekend perfect for woodworking, they're taking it next Wednesday.