I'm trying to install a computer on my son's roadbike and the wheel magnet won't tighten snuggly on the spoke. The screw bottoms out and the magnet is still really loose. I'm planning to try wrapping the spoke with a little tape or maybe even using super glue. Do any of you have other ideas for solutions? This isn't a real expensive bike or wheel, but its a serviceable bike for his college home and I don't want to damage it.