[. . . ] [. . . ] For the flat-top model (M-400), up to . 050" may be removed from either the top or bottom of the bridge (Figure 1). For the archtop model (M-300), up to . 180" may be removed from the base during fitting (Figure 2). Special care must be taken not to damage the pickup wire when tooling the bridge blank. Figure 1. M-300 Installing The Jack After fitting the pickup, place the jack in a comfortable location (Figure 3) and tighten it with the enclosed turnbuckle key (Figure 4). [. . . ] [. . . ]