Sorry for the late reply
Forgot about this almost completely until today when I saw a reply in the mxhq thread.
Not really sure what more info I could tell you. What I wrote in the thread is pretty much all I did.
I just moved the forks to a random direction in siktrix (moved in one frame and tweened only the forks a few frames to both directions from the changed frame), saved the trick, went in game and checked how it affected the fork animation. The first direction made the separation noticeably worse so I thought what happens if I move the forks to the opposite direction and lo and behold they separated less. Then it was just repeating the whole process lots and lots of times.

Not really sure what more info I could tell you. What I wrote in the thread is pretty much all I did.
I just moved the forks to a random direction in siktrix (moved in one frame and tweened only the forks a few frames to both directions from the changed frame), saved the trick, went in game and checked how it affected the fork animation. The first direction made the separation noticeably worse so I thought what happens if I move the forks to the opposite direction and lo and behold they separated less. Then it was just repeating the whole process lots and lots of times.