Jin writes
Those of you that have found a Fallen figure were probably all "WOOHOO!" at his unique design, just itching to get him out of the package. And if you're like me, once out you were suddenly all "AAAARGGGGGHHH!" as his lower legs popped off every time you tried to bend his knees. Sometimes his arms popping off if you had a weak connector. Here's a fix for that! Basically involves taking the leg apart and inserting a particular kind of screw into the lower leg to keep them in place. You'll need a dremel or other rotary tool for this one.