Duke,
The Equation is longer than the Doom.....with more backend. The Doom revs up pretty early for a pearl reactive ball.
If I had a Doom(drilled like yours) and wanted to get an Equation drilled to be different I would drill the Equation with the pin 4 3/4 x 4 1/2......and place the pin above the fingers if possible.
In looking I see that the ball has a 2 inch pin......you may not be able to go above the fingers and get all of the extra finger weight out of the ball.
In that case I would drill the Equation with the pin below the bridge. That will still give you a tad more length and a bit of seperation between the 2.
Goodluck,
Carl
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Carl Hurd
C-G Pro Shop (owner/operator)
Youngstown Ohio
Track Intl.-Amateur/Pro Shop Staff
www.trackbowling.comTag Team Member #1
(tag team partners w/ Rick)