Wow. Quite the adventure in frustration today.
I went into gmax, opened up my pretty much functional model with the animated eyeballs, changed the type to Tile, and exported. Simple enough. Closed up the model and dropped the exported one into my testing hak.
Wouldn't you know it, all my eyeballs looked like raisins in-game. Reopened my model in gmax, and the export as a tile had
inappropriate term messed up practically everything in the model.
Changed the model base back to Character type. Dropped everything else but the animation dummy. Remade the jar, the water, the copper parts, and all the eyeballs. Exported, tested in game...same damn thing.
Erased every copy of the model I had (they were all variations on the same mess-up). Closed down gmax and the listener completely. Restarted from scratch.
Eventually, I re-figured out how I had gotten both the water and glass to show at the same time (water and glass both tranparent, but glass is "inside out" so it only renders on the far side), and finished the jar of eyeballs. Then I quickly made a 2nd jar, this one with no top, filled with glowing, smoking green fluid.
These are not set as type Tile.
There is some very minor misalignment when overlapping the two parts of each jar, but it's only visible from certain angles while zoomed in very close to the jars. I'll live with it.