Call Peter at GDL (805 772-5127) he can help you troubleshoot it and give you instructions for uninstalling the two components. Worse case scenario is you're looking at less than half of your estimate plus shipping both ways. He warranties his work, his website is www.gdl-online.com.
You'll have to do the uninstall/install yourself, but it is straightforward, my amp and actuator are back to 100% and scheduled to arrive tomorrow! I have been very satisfied with their service.