Original sentence: Originally founded as a side business by Macintosh-using engineers designing computer-controlled institutional electronics, Tekserve has grown from a small back-office Macintosh repair shop to become a very large single location Apple Specialist
Edited sentence: Originally founded as a side business by Macintosh-using engineers designing computer-controlled institutional electronics, Tekserve has grown from a small back-office Macintosh repair shop to become the largest single location Apple Specialist in the United States