Re: tbh/warre hive question
Try making your TBH the correct dimensions so that you can set a langstroth box sideways on top, so that the frames run the same direction as the top bars below it.
The lang won't cover the full length of the TBH under it, so use a top cover on the part of the TBH that the lang does not cover... or make the TBH dimensions so you can set 2 langs on top, sideways, so the frames run same direction as the bars below. So, what would that be, outside dimensions of the top of the TBH would be 20 inches wide by 32 1/2 inches long. Then could set 2 langthstroths on top sideways so all frames run same direction as bars below. Could even use 2 queen excluders, one under each langstroth.
If you used 8 frame boxes could make the TBH 20 inches wide by 27 3/4 inches long with 2 8 frame langs on top of it.
OK, confession time, I've never used TBH and this idea was not mine originally.
20+ years, raise my own queens, feed when needed. I treat, but have not perfected varroa management yet.