Sea Ray

2010 370DA with DTS and Axius...

Got a "SHIFT ERROR" and confirmed that the SB engine would only engage in reverse, but not in forward gear. Worse, sometimes it wouldn't disengage back to neutral. As a result, the boat was going in circles around itself, and I had to shutdown the SB engine in order to get it back to neutral. After several of these shutdown (Ctrl-Alt-Delete) and restart cycles, I called the mechanic and they recommended I drop the boat for further diagnosis... 2 weeks later, they ordered and installed a new Shift Actuator, which did not solve the problem.

The problem remain. The computer either doesn't command the actuator correctly, or doesn't read what it would like to see. Mechanic reports that the Searay laptop throws a 'communications error' and that they need to talk to Mercury about that. Mercury has been unresponsive...

This boat is new to us, we got it literally one month ago and it worked fine the first 15 hours... then this. Questions are, 

1. How do I get ahold of Mercury? So that they work with the mechanic in diagnosing this fault?

2. What else should I do? 

Currently the boat is undrivable... any help or guidance is extremely welcome! Thanks in advance.