i'd try to explain as understandable as possible

i have box (top view)
++++
++++
++++
++++


when i shoot near left corner, box is moving by clock
->
++++
++++
++++
^+++


but when i shoot near right corner, box may move in another side, but he is still moving by clock
->
++++
++++
++++
+++^

maybe, this is trouble with mass matrix or someting like that?

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