My Crackatwoa build is going well (I think) and I'm nearing the end.
One of the steps calls for attaching, but not soldering a wire to a lower point on a terminal strip. Well, I mistakenly soldered it. My solder sucker is too big to effectively desolder the connection though, so I thought I'd just make the attachment to the upper hole of the same terminal. I checked ahead in the instructions and there is only one other wire that goes to the upper hole later on. Since all 4 wires will be soldered to the same terminal (2 upper and 2 lower), I'm assuming it won't matter whether a particular wire is soldered to the U or the L point. Am I correct?