Muchas gracias, 59'er. I've seen it done before but I never knew what wax to use. Just one more quick question...the cover I'm using is a solid top cover; no holes. Do the pole pieces need to covered with something (like electrical tape) prior to the wax job in order to keep them from making contact with the cover?? I wouldn't think it'd be an issue if the threaded poles were down all the way into the bobbin.