Hey Adrian,
Another thought for you since you guys "down under" usually describe having less oil to deal with. Place the pin directly above bridge and mb about 3.5-4, then polish it. This will help stabilize the backend and offer more of a strong arc vs it being too snappy. I have this layout on one of mine and it just gives a very nice smooth and continuous arc motion throughout the lane, nothing jumpy at all. Hope this helps some....
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Rick Leong
Ten Pins Pro Shop
Track Intl. - Amateur/Pro Shop Staff
Vise Inserts Staff