J-Mac...the reason the reaction is enhanced is because when the cg ends up in those locations there is one less force counteracting the dynamic reaction of the core.
I drilled a pin in (out 1/2"), low top weight (1.2 oz) Blueberry Buzzsaw awhile back and I laid it out pin axis.
I was shocked at the reaction I obtained form this drilling. I was expecting a very smooth rolling ball that arced into the pocket. That's not what I got at all....the ball was an absolute animal. Yes the ball did travel the first 45 feet very smoothly and cleared the heads and pines very easily...but the backend..WOW!!! I was shocked at how hard hte ball turned the corner. When I asked the gurus at Lane 1 they tols me that it was due to the after drilling cg ending on the pin and at my PAP.
So yes I guess it does matter but the only way to truly predict it and make it happen is to spend the $$$ on the GBS system Lane 1 sells. It rells you how to predict where the cg will end and such. I don;t have it myself but I have seen the paperwork and it is probably worth the $$$ for bigger shops who do the volume to justify it.
--------------------
Doug Sterner
Doug's Pro Shop
Owego, NY
http://dougsproshop@aol.com
www.dougsproshop.net
Lane 1 Buzzsaw...The Official Power Tool Of Bowling