The center seam on the back was open and needed to be glued and supported. Most acoustic guitars have an internal "seam strip" that reinforces the glue joint of the two halves of the back. This model does not so I needed to fit and install a couple to keep the joint closed. One ran from the neck block to the first brace and another between the first and second back braces. Note that Tacoma uses an upper bout soundhole so these repairs were a little more difficult to pull off versus a traditional soundhole.