MFP elevator door problem

[Damascus]

I'm having some really unusual problems with the elevator doors from Machine for Pigs.  When you open them, they are supposed to just rotate around the side of the elevator pod, and at first, they work normally like that in my mod.

However, as time goes on, a few of them start to bug out.  Now, when I open them--

SetMoveObjectState("elevator_door_right_1", 0);
SetMoveObjectState("elevator_door_left_1", 0);

--they shoot out linearly (away from each other) at high speed, far across the map.  Even more confusingly, in the next map, the elevator doors work normally, even though they are the same entity!

I have no idea what's going on here.  For reference, here are the MoveObject properties of the elevator door.

MoveObjectType: Angular
OpenAmount: -0.55 (left), 0.55 (right)
MoveAxis: Y
OpenAcc: 2
OpenSpeed: 0.6
CloseAcc: 2
CloseSpeed: 0.6