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Old 03-15-2018, 12:39 PM   #5
davepl
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Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
Re: Dumb Question; But Humor Me

Not saying it's the answer, but one thing to remember is that the cylinders on one bank are set backwards relative to the other bank (by one rod width).

Perhaps there's a greater accumulation of steam on the one with the bigger coolant reservoir at the front of the bank?
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