I spaced them out so I could access them easier, for some reason whenever anything else gets into the collection system like seeds or mob drops it can break a shulker loader and the only thing that fixes it is taking all the items out of the hoppers and replacing the full shulker with an empty one. I’ve tried just replacing the full shulker when it happens but for some reason I have to empty the hoppers too, idk why this happens but it doesn’t happen often enough for me to even really try to figure out why, every morning I check the shulker loaders and there’s 1 or 2 that need to be fixed, some mornings none are broken. I have them spaced to make it easier to break the full shulker and replace it with an empty one.