/// SYMPTOM DETECTED
Cue ball hops or jumps off the table when applying backspin.
/// ROOT CAUSE
Cue Elevation. Player X (above) kept his cue level for a stop shot. You are likely elevating the butt of the cue, causing a 'scoop' effect.
/// THE DARKSIDE FIX
We track 'Cue Elevation Angle' on every shot. If you are above 3 degrees on a draw shot, you will fail. The Emperor's Eye final diagnosis report can pick up on this!