Raymarine a78. The compass heading on the autopilot doesn't match the boat compass so the...

Raymarine a78. The compass heading on the autopilot doesn't match the boat compass so the . Install was performed with help from Raymarine field rep. ) NMEA 0183 OUT+ lead. Is the unit still waterproof with this failed membrane, or do I need to protect my helm mounted MFD from rain and salt spray while I await repair? Raymarine recommends that the AIS500 be used exclusively with the R62241 Passive GPS Antenna. I would like to upgrade the control head to a Raymarine p70R if the system/unit is compatible. The compass heading on the autopilot doesn't match the boat compass so the I currently have an Autohelm Type 100 autopilot controlled by a ST6000+ control head. Q1: Is it compatible? Q2: if it's compatible, can it interface with my Garmin 1242 xsv plotter over the Garmin NMEA 2000 network? Need any adapters? Thanks for your help. Now it will not disengage at all. I follow the manual instructions and it keeps directing me to keep doing circles, i did about 20 circles tonight before giving up. I purchased a ev200 linear autopilot and early on it would not disengage right away and would take about 30 seconds. ivyyesg jplw rqzrlf mspchb uvym fqlfy atjcv aodzq idydeat zxleb