And here is tier 3 in the go-bar deck. In most of my guitars, tier 3 has mare braces in it, but in Martin facsimiles the tone bars are parallel, so both go in in tier 2. More than you need to know . . . I am using a slightly large maple bridge plate in case it turns out to matter, which I do not actually think is true as long as the plate is in the right weight range. But just in case:
