Black Widow Mass Bias Angle???

[EvoZoo1985]

I promise Im not trying to beat a dead horse... but... I really want to get this right the first time. I am thinking about getting my Black Widow drilled with the pin about 1/2" below the finger holes... just ever so slightly to the right... with the CG at about 45 degrees out. Also, it has a 3 ounce top weight and a 4 inch pin length. I was just wondering what Mass bias angle one would use... Hammer's page says that the 75 degree works with this but that the 45 will also... WHAT IS THE DIFFERENCE???

[Street Racer]

AFFECTS OF MASS BIAS (MB) PLACEMENT
As the angle goes from 75° (strong/flip) to 0° length will be reduced and have more of an arc reaction. From 75° to 105° length will increase and have more of an arc reaction. Beyond 105° the reaction will keep a very similar reaction but with more length.
Remember : These only enhance the characteristics of the given ball and Pin placement and the flip (strong) position may not necessarily have the biggest backend reaction on given condition due to many other variables that affect ball reaction (bowlers specs, lane condition, etc.)