diff --git a/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt b/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
index 4dc16f4fce..8a15abe39f 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
+++ b/OpenSim/Region/Physics/BulletSPlugin/BulletSimTODO.txt
@@ -9,6 +9,9 @@ Enable vehicle border crossings (at least as poorly as ODE)
 Lock axis
 Deleting a linkset while standing on the root will leave the physical shape of the root behind.
 	Not sure if it is because standing on it. Done with large prim linksets.
+Linkset child rotations.
+	Nebadon spiral tube has middle sections which are rotated wrong.
+	Select linked spiral tube. Delink and note where the middle section ends up.
 Vehicle angular vertical attraction
 vehicle angular banking
 Center-of-gravity
@@ -68,6 +71,8 @@ Vehicle attributes are not restored when a vehicle is rezzed on region creation
 
 GENERAL TODO LIST:
 =================================================
+Explore btGImpactMeshShape as alternative to convex hulls for simplified physical objects.
+	Regular triangle meshes don't do physical collisions.
 Resitution of a prim works on another prim but not on terrain.
 	The dropped prim doesn't bounce properly on the terrain.
 Add a sanity check for PIDTarget location.
@@ -338,4 +343,4 @@ Avatar standing on a moving object should start to move with the object. (DONE 2
 Angular motion around Z moves the vehicle in world Z and not vehicle Z in ODE.
 	Verify that angular motion specified around Z moves in the vehicle coordinates.
 	DONE 20130120: BulletSim properly applies force in vehicle relative coordinates.
-Nebadon vehicles turning funny in arena (DONE)
\ No newline at end of file
+Nebadon vehicles turning funny in arena (DONE)