- Hero Factory shells with ball snaps don't snap correctly to part 98577 like they do to 90607. Here are images of the parts in question, the way the shell should snap to both beams without rotation, and the way the shell fails to snap to 98577 without rotation.
- The ball in the center of 98590 can't connect to ball snaps or ball cups.
- Vertically-aligned "B" beams like 90615 can't connect to the ball snap of [url=http://www.bricklink.com/catalogItem.asp?P=87841]87841. In fact, there are hardly any angles at which they can connect. Two sets actually require a connection like this 2232 Raw-Jaw and 6229 XT4. And neither use of the parts stresses them any more than any other ball-cup-to-ball-joint connection.
Edited by Aanchir, 11 October 2012 - 10:22 PM.