Built my first stations, ai seems to refuse to dock with one of them?

[entelin]

I have a research station and a trade station, they both have the same model. The trade station is pretty active, ai coming and going. However the research station there was one successful delivery, and now there's an AI sitting outside doing nothing and nobody else has come. Any rules of thumb I should know about placing stations? Things the AI doesn't like? tips?  Thanks.

[Vis]

I haven't built a research station or trade station yet. But I would highly recommend adding a lot of stone to your station as a cheap way to add mass to them. When I first built my shipyard, one of my ships on patrol ran into it and made it spin around a few times. But after adding a lot of mass to my shipyard it doesn't move as much when a ship bumps into it. What I did is added big blocks of stone, then covered each side with a thin layer of hull block. I made it 0.25 thick and on the edges/corners I used glow blocks, just to make it look cool. 8) 

[Gamer Senpai]

Best I can think of is to make sure the station has stuff to sell... Check your stock...