Quote from sayblekitten
I'd like to request/comment. I don't have an account on github so i can't do it there. Is it possible to allow the bridgebuilder to extend and retract matching blocks. When I use tinker's mechworks, I can put 5 blocks on one side, and 5 on the other. Trigger the builder, and it puts the 5 blocks together neatly to make an unbroken stretch of 10. Trip the switch again, and it neatly sorts into 5 and 5. When I do this with LL, one builder tries to retract everything, leaving a hanging strand of 5, and one builder empty.
http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1294764-luppiis-ladders?comment=107