No production problems with the NVS that I have heard of.
Wloo Bowler,
The "curves" on the chart are there to show the difference visually in ball motion for balls in the lineup vs eachother.
There is no accurate chart....as you mentioned the bowlers are different the lanes are different etc... the charts are there to show you a comparison of the ball motions if they were tossed by an identical bowler on an identical pattern.
-Carl
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Carl Hurd
C-G Pro Shop (owner/operator)
with locations in:
Youngstown Ohio (West Side Lanes)
and
Boardman Ohio (Camelot Lanes)
Track Intl- Tech Support
www.trackbowling.comTag Team Member #1
TAG TEAM COACHING!!!!!!/Co-Founder