NOTE, in creating this article they used 1 ball to illustrate all 3 drillings!
They went on to specify in this drilling that the cg is to be no more than 2 inches away from the pin! Thus no weighthole they say.
I believe this ball will end up with the cg near the fingers and slightly deeper fingerholes drilled for most 2 to 3 ounce top weight balls!
REgards,
Luckylefty