More control is given to the operator with the full-time electrical system diagnostics, hydraulic system diagnostics, engine performance diagnostics, joystick steering, auto stabilizers, and operator adjustable controls. The SXP-Diagnostic can set and hold a constant boom speed during a pass, and quickly diagnose an electrical issue or operate the entire machine on one joystick. It makes a perfect landing on every pass and performs a uniform screed pass. Somero Enterprises Inc. 603-532-5900. .