Why do you want to cull 33% of your frames each year? Even the folks who believe their combs are loaded with chemicals only do 20%. I cull the frames that are wonky or are mostly drone. Good worker comb stays in the hive. That said, I do date the top bar to indicate the year the comb was first drawn. Tried dating them when I put them in but that did not work out well since some were not drawn until the following year. Frames you want to cull should be moved to the outside and new frames should be inserted into the active part of the brood nest where they will get drawn with worker comb rather quickly.
