IMO--One would produce a little more flip reaction than the other one. Drilling #1 should have more movement on the back and drilling #2 would be more 'rolly' on the back. I know whenever I move the mb closer to my pap the ball will roll earlier and not have as much on the back-end. The drilling instructions are really good examples if you have them. Hope this helps.
--------------------
My ball won't hook--Oops, it was my spare ball....
