I took apart my secondary to clean it up and check everything over, and I usually mark them so that I can put them back together exactly the same way I took them apart. This time I forgot, on the primary there are two marks "X" on each sheave and you align those for balance. I can't find anything like that on the secondary, are these balanced individually so it doesn't matter how they go back together? Each side has a different number of holes drilled part way through in which I believe is for balancing, is that correct? I searched the forums for this and couldn't find anything on this and can't find anything in the service manuals either.