Lefty, I just got a NIB Throttle/R from cheapbowlingballs.com for about $99 shipped...not sure if they have 15#, but I'd check into it, they do real good service there and are very personable...not sure on pin placements either, i'll be getting mine today and i'll report back on the results!
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Andrew Loose
"King of Them All"
"Evolutionary. Revolutionary."