Putting on new tires on 98 XR250. Got front on last weekend. When cleaning up back rim one spoke just fell out (tire was off). I figured it probably had broken (near the hub) when I had tried to tighten in the past and the nipple was rusted to the spoke. But it wasn't, took only finger effort to unthread the nipple from the broken spoke. Anyhow called 3 shops near St. Louis all would have to order and maybe could get by Friday. Is it possible to use a little duct tape and put in nipple. Put the back tire on, rim strip, tube, etc. Then when I get the spoke later put it in and thread into the nipple? I think the nipple would stay in place on the rim from just the tire air pressure, but not sure? This bike ran from 96 to 04 and nobody carries spokes? Are they the same spokes as the 400?