I recently installed a Simrad WP30 wheel pilot and can't seem to get the internal compass to calibrate. I almost got dizzy motoring in circles trying to get it calibrated %) I have a call in to Simrad but thought I'd throw this out to the forum. The manual states that after initiating a slow turn to starboard, at 2-3 mph and during a 450 degree turn in two minutes the system should calibrate. -Doug