wids aloft
Pierre..
Glad to hear you have the compass aligned. I found the calibration a bit tricky. Got your mag variance and intensity set?? if not, it makes a difference. I think you have to reswing the darn thing if you change the setting. Mine was off because I had the canopy open during the swing. My compass module is behind the baggage bulkhead, and the aft section of canopy rail interfered with it when the canopy was open. Watch where you stash that extra headset if your compass module is back there!! I used a compass and chalkline to aim mine, and I have it pretty close. As for the internal heading correction, it seems that if you correct in the NS axis, it skews the EW axis by half the amount, and vice versa. It remembers your setting, and this can confuse you if you don't zero it before flight. It was well worth the effort to recalibrate IMHO. As for winds aloft, data processed whilst in a turn will skew the winds aloft calculation quite a bit, and it takes a few miles on course to get an accurate depiction. I am sure you have figured this out by now, but thought I Would chime in anyway.
Thinking seriously about a 10.....
Chris