I'm on the same boat as you. Way out of warranty, just measure my pin holes and one is 13.89mm from the edge and the other is 13.42mm from the edge. When I spin the wheel without a bat it spins symmetrically, but any bat on it wobbles side to side.
The whole time I thought it was an issue with the table I was setting it up, or just my skills at throwing while standing. Ugh, so frustrating.
Did you ever figure out a way to fix?