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Old 10-10-2012, 11:13 AM   #4 (permalink)
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Join Date: Oct 2008

I don't own one. However, since the 3 holes are all in a line and this appears to be machined, not cast; the following stands to reason.
The top hole should run to the oblong #010 hole.
The Second hole down should run to the #007 hole.
The bottom hole should be a vent/ exhaust.
Otherwise the passages would cut into each other when drilled.
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