Seen it, I can do it, sometimes takes a while, but i really think its down to things settling after they have been disturbed, I change stuff all the time, gear ratios for instance, I can change individual sprockets on a cluster, for example I have 13-14-15-16-17-19-21-23-25, but I could drop the 16 and put a 28 in if I am doing hills, so 13-14-15-17-19-21-23-25-28. Bikes aren't rocket science, try rebuilding a 1960 LWB Landrover Camper.
But thanks for the link, it does get mentioned from time to time in this thread, I think
@Mo1959 was the last to link to it.