OK here is the deal.  Ball had only a handful of games on it when I bought it.  Plugged it up and redrilled,  then resurfaced,  when it was resurfaced it did not turn on one of the axis.  This developed a flat spot in the shape of ring about 6" across.  The BATTLE shield is right in the middle of the ring and also right in the middle of my track.  Thumpety, thumpety.  Any offers?  PM me,  Thanx,  Doug