If you have a database with the TB-16 on the starboard side, it is not LWAMI 3.11 anymore. It is a "new" mod. That may seem nitpicky, but if you're trying to join a multiplayer session, it matters.
On changing the sensors. I was wrong about the mast's sensor assignment being on the mast dialog. It's actually on the sensor dialog, on the top of the page, over toward the right. The data shown on the mast dialog just displays what sensor was assigned to the mast via the sensor dialog page.
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