Generally I've shyed away from messing with spokes or lacing a wheel. I've done some trueing, but that's about it. I read a long time ago on the old How to make a fixie thread that for the best results you needed to redish the wheel if you are using a wheel that had a freehwheel cassette. The advice (as I remember it) was to loosen the non-drive side spokes half a turn and tighten the drive side spokes half a turn... is that right? Anyway, I am turning a 24" alloy mountain bike wheel into a single speed wheel with a BMX freewheel. I was wondering if the wheel has 2 different length spokes to accomplish the dishing for the cassette freewheel? If so, could I just take another matching wheel and swap out one side spokes so that I have all the same length spokes to rebuild the wheel? Am I explaining this right? HELP!!!