Kind of a tangent, but I just picked up some sets of those mini-size T-plugs for my Xray M18T and they are great. The regular T-plugs are too big, and the micro ones are too small, but the mini are juuuusst right for 1/18!
They would work out well as a sacrificial spark connector. This is the only place I've seen lately that has them.
http://www.progressiverc.com/index.p...emart&Itemid=1