Pointing
Larry I have a 380 thats 4 years old with factory sails. She has just been slipped and antifouled, a folding prop installed and the rigging re-set ( the back stays were far to loose ) I can now sail closer around 45-50 deg in 10 to 15 knots, however I get more power at 60 to 70 deg. I would expect a C400 to perform similar. Get your rigging checked for tension, according to the guy that did mine the rear stays must be tight and actually bend the mast slightly backwards, this allows better pointing.It did with mine.Good luckWayne