Here in Canada, all proshops sell balls at retail, so I wouldn't know if $170 is a good price down there. Compared to up here though, it's an awesome price!
As for the drilling, I think you should move the MB closer to about 4 to 4 1/2" from your PAP. I'd rather have a ball be too strong than not strong enough. I find it easier to tame a ball down than make it more aggressive up front while still having a lot for the backend.
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Dino
Evolutionary. Revolutionary.
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