hey everybody, i have two questions that maybe some of you can help with. the first is this, i have a friend who is about to convert her ss mtb (surly frame) to fixed. she is running a surly "new" hub right now. the hub, as most of you know, is threaded for freewheels on both sides. without getting another hub, what is her best option to go fixed? should she thread on a cog and locktite a bb lockring on it, or what? it needs to be a relatively cheap fix. although she is stong, she only weighs about 110, so i don't think spinning a cog off would be a problem. the second question is this, i'm about to build my second fixie. its a surly steamroller frame i'm getting dirt cheap. anyway, the previous owner had it powder-coated, but i really don't like the color. have any of you painted over a powder-coat finish? and if so, what process did you use? thanks ahead of time.