%amps.portDump("Thrudder-2",2,2,34,3) Hex:BE87EF9E,BE4FDF3B,BE4F5C29 %amps.portDump("Host",32,4,11,3) Hex:0,0,0 First attempt at compass cal %amps.portDump("Thrudder-2", 2, 2, 34, 3) Hex:3D051EB8,3EA18937,3D77CED9 %amps.portDump("Host", 32, 4, 11, 3) Hex:FFFFFFEB,72,BC Host compass drifting, retry calibration Hex:3D09374C,3E8ED917,3D73B646 Hex:FFFFFFED,77,A7 Host compass still drifting. Not sure if this explains the desired heading problems.