Joe,
I drilled a 715a with a 5 1/2 x 60 degree layout (pin under middle for me, very small weighthole in thumb quadrant) and this ball is anything BUT angular...if you're looking to tame down the angularity, I would highly suggest going with something similar.
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Andrew Loose
"Technology is anything that's really cool that you don't know how it works, and if it breaks, you have to buy a new one!"