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Old 12th February 2018, 20:47
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Master Cutler Master Cutler is offline  
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Join Date: Jan 2011
Location: Mansfield Notts
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Welcome to the forum Streak19, afraid I can't answer your question but understand that Ivatt introduced several design improvements on Stanier's original GWR based design.
I will be very interested if anyone can give the answer.
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