Jefferies left the project, and art director Richard Taylor wanted to start over with designing the "Enterprise". However, Roddenberry convinced him to continue working with Jefferies' design. Taylor brought on Andrew Probert to work with him on refining the ship's details. Probert added items such as phaser banks, control thrusters, and hatches for saucer section landing gears; Taylor redesigned the edge of the saucer and elements of the warp nacelles. Art director Joe Jennings and conceptual illustrator Mike Minor added additional details. David Kimble created diagrams and deck plans for the updated "Enterprise" that were provided to model makers, toy companies, and other manufacturers of licensed products.