I've got lolly sticks under the top bar as a comb guide and, so far at least, the other foundationless frames are ok. Not perfect, but not bad enough that I've had to pull them. Already decided against the vertical supports in super frames, though I've got a fair few already built with them; I'll keep the vertical supports in 14x12 brood frames though. Current super spacing is 12 frames on rails, alternating foundation and foundationless to stop them going too wild, my plan being to maximise drawn super frames as I have no stock of drawn comb. I've got 10-slot castellations to go in the boxes but I wasn't sure if they'd make a mess with that much spacing and no drawn comb. Once I've got enough drawn comb I can hopefully go fully foundationless, alternating new frames and combs rather than new frames and foundation.