I guess I underestimated my bees, and installed them in 3' TBH. As of yesterday, I am out of space to add bars. By this next weekend they'll have evey bar at least partially pulled, but it may all be brood comb still. I'm working on building a 4' hive and was going to just transfer them into it, by moving over all the bars of comb (with the queen of course).
Any tips on how to assure it's a successful move? So far I have been blessed with no major issues, and I'd hate to start now.