256mm will be fine for both sides. 1mm shorter on one side will not present a problem. Using 256 and 258mm will not be a problem either unless you run out of thread, that has happened to me which i why i dont like usinger longer than calculated. By the time you have bedded the spokes in there wont be a problem.
256mm will be fine for both sides. 1mm shorter on one side will not present a problem. Using 256 and 258mm will not be a problem either unless you run out of thread, that has happened to me which i why i dont like usinger longer than calculated. By the time you have bedded the spokes in there wont be a problem.