So I went with a few peoples recommendation to out fit the BHM with all Garmin. Phantom radar, GPS and auto pilot that uses the GPS instead of a dedicated AP compass. Because of the size of my N-50 steering cylinder I had to buy a larger pump to handle the extra volume. Reactor 40, so I installed the whole thing as per instructions, did the set up wizards and cannot get it to hold a heading without shadow drive interruptions that allow the boat to go off course and does not return to the original heading. Tried steering a route and same deal. Anyone gone through this that can shed some light on WTF is going on here??