Just punched out my new Zone X High Diff..
I have mid-high ball speed (15-17mph) and mid-to-high revs (power stroke/slight crank)
ball is 16lbs, left at factory-surface, with 1-2" pin
CG is kicked out to the right slightly, still under my palm, and the pin is up and to the right from there (on the same line as the near thumb-hole edge and the cg). no weight hole needed
Bowling in a wood house, fresh condition, medium oil in the middle blended to light oil on the gutter, with fresh backends.
The ball worked VERY well for me. With this drilling, the ball started up a little earlier. Nice, late-midlane roll, with a strong arc in the backend, with a lot of power at the pins. Ball is definitely for these medium-dry condition, but suits the condition very well. It doesnt roll up early, and it doesn't overreact to the dry
Also tried practicing with the ball on another condition in the same house. It was a 2nd shift condition. The front 40 feet were reoiled, without stipping, so there was a decent amount of oil in the front 40, with carrydown. The ball was a dart. It wouldnt move at all on this condition.. might as well have been plastic. This wasnt the condition the ball is intended for tho, so i wasnt really surprised.
Will report after bowling in other houses. Also, check for my review of the Zone-X Low diff