Wrist joint woes
 

I ordered a Figuarts G3-X a while ago, and it arrived at work today, but one of the wrist joints has broken somewhat, while still functional, the ball half comes off the peg half whenever I switch the hands over, and while I can just pull both halves to put them together whenever I switch them, I'm just curious as to if anyone has any ideas to repair or replace the ball joint, or if anyone has a ball joint or two hanging around that I could possibly purchase in the hope of it fitting?

http://i.imgur.com/r65kRai.png