Technically, according to the great and powerful Mo, any mass bias below .010" (I believe) can be ignored and treated like a symmetric core. (FYI He used to say any MB below .008" can be ignored.)
When I looked up the Mojave, it has/had a PSA/MB strength of .008".
http://123bowl.com/bowling-balls/morich/mojave/
So, theoretically the MB can be ignored. (Personally, I'm not sure I believe that; but I take it all with a grain of salt.)
I am not up on my Drill and VAL angles, but it used to be that a Drill angle for the average PAP (4.5" - 5" over) of 45-55 degrees was fairly "in-between" or neutral.
Not quite sure I buy that entirely either. The Mojave is drilled with the MB in the track now, and it is a hook/stop, unforgiving piece of junk right now.
It makes one move, and it is the same move no matter what. If you can line up outside ten, and get it to hook set in exactly the same place every time, you can score. Otherwise, your just stuck, trying to play with a ball that won't let you really do anything else.
The cover on the ball has minimal games on it, and I would like to get some use out of it.