VT,with yopur pap being so close to mine this might be easier for me to guess timate.
Trifecta 5" pin to pap, 5-1/4 rad to pap
Vertigo looks to be a 3-3/3 stacked, with rad being 5-1/4 - 5-1/2 to pap
Diablo 3-3/4 to pap, mb 5" to pap
Fired Up 4-1/2 to pap, mb 5-1/4 - 5" to pap
Banchee 4 x 4 stacked mb to pap 4-3/4


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Steve
Leading Edge Pro Shop
512-755-2947
e-mail tekneek@281.com

www.dynothane.com

Capt Ramius "Vasili, give me one ping, and one ping only"

Why guess?  Get a tape measure or flexible ruler.  Draw a line from the middle of your bridge to the middle of your thumbhole.  Measure your two spans, average them, and divide the average by two.  Measure the average from the edge of your thumb hole and mark it.  This is your grip center.  Draw a line perpendicular to the center line through the grip center.  To do this, you'll need a flexible straight edge so you can line its narrow edge up with the center line so the line will be perpendicular.  This line is your midline.  Measure over the horizontal PAP distance (5 1/4" in your case) and mark it on the line.  Draw another line perpendicular to the midline through the mark (use the previously described procedure).  This line is your VAL (vertical axis line).  Now measure the vertical PAP distance.  In your case this will be 1/2" down.  For the majority of bowlers that have positive vertical components, it would be that distance up.  You have just located your PAP.  Now it's simple to measure the distance from your PAP to the pin and to the cg or mb.  It takes a lot less time to do it than to describe how to do it.  --  JohnP