I drilled a Couple of Risings for some customers.Bowlers specs are 300 rpm's and 17mph and 7 deg of tilt.Laid out with pin 4 from pap and drilling angle was 45 deg and 70 deg to the val with a hole down by the thumb.Ball was very clean through the fronts and read the mids with great continuation on the backend.I will say that the rising really gets sideways on the back when it encounters friction.Lane pattern is 39 feet in length with your normally house shot with bump to the right.Another great job from the boys in hopkinsville.Follow  the 3 drilling patterns that track has suggested and you will be fine.I wouldn't deviate from them until track gives us more drillings.
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Dannial Cohen
 Ebonite Regional staffer/turbo
www.strikingresultsatl.com