This is a pretty active community! That's awesome. Well thanks for the replies everyone. I don't have the "Dock Align" plugin installed. I generally prefer vanilla oftens though, so I'd rather not add it. I also had no clue how to identify which was the dock of interest when I looked at my save file, so I wasn't sure how to ensure that the dock wasn't poopie. Instead I launched another of the side pieces and gave it another go... and failed again. Then I came back here and read some more replies and based, on the latest few, it sounds like it's just harder than I can handle. That's kind of a bummer, I thought it would be awesome to go Lego-style and use the same "side piece" over and over and build a 3D lattice network for a super station. But alas, my piloting skills aren't there. Thanks again for all the replies!!