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Difference between dual action and two way truss rod
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02-20-2019, 09:06 AM
John Arnold
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Join Date: Jan 2009
Posts: 4,091
Martin changed to a two-way rod when they experienced some back-bow on the necks with Richlite or Micarta fingerboards. I have never had that issue, so I tend to stick with one-way rods. IMHO, they are easier to work with.
John Arnold
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