I've heard of both of these methods to get the oil out of a ball.  I did a search and didnt really find much on the topic on here.  I talked to a local pro shop and they have the official baking machine which they'd be glad to do for me for 25 bucks and another 25 for a resurface.  At this point, I am over 1/2 way to what I paid for the ball I want this done to.  Not because its an el-cheapo ball, rather its one of the Wild Things that I got when they discontinued it and the price dropped like a rock.  But I've rolled the crap out of this thing and it's not rolling like it used to.  The backend pop is just missing.  I loved the way it rolled, I just want it to do it again.  I've done the hot water bath to it already and didnt get much difference.  Any experience/advice yall could offer would be much appreciated.