I drilled the cherry with my favorite drill, long and strong. That is was for a few games, then it dulled down a bit, so i had sometimes long and Always strong, so I shined it, for 3 games it was good, then same again, so on and so on untill I got irritated and sold it. To me thats the cover, but these balls are all jumpy by nature, if you aren't prepared to put that ball away when conditions change then don't buy a bomb ball period. I honestly think they are a situational wonder, my first game out of the box, 288 with me choking, after that I hit a 276, 279, and a couple other good ones, but all were on a fresh shot, anything with carry down or drying fronts, the reving core got it going to quick or it was uncontrolable at the break. For me I would never buy another because of that real condition specific reactions. O and I should mention the same issues with the BCB for me too. So I guess if you want to play its safe just stay away, but its like the x-factors or any asymetrical ball, if you match then look out, if not, go home.