Complex sentence: Terry has made several dynamic changes to the design of the flagship Fly model, including updating the truss rod, without sacrificing the weight or the feel of the guitar, and refining the hands-on process to build these instruments.
Split into simpler sentences: Terry has made several dynamic changes to the design of the flagship Fly model. Including updating the truss rod without sacrificing the weight or the feel of the guitar, and refining the hands on process to build these instruments.