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There was a good thread on tuning for the h23 a few months ago. Check the archives. In general, tune your forestay, uppers, lowers, and aft stays in that order. I think the diffences between the varlious masts is more detail (i.e., how much rigging tension) than prodedure and goals. You want the mast held in colume by the rigging, with enough tension so the leeward stays are not loose in moderate winds. Loose leeward stays tell you the windward stays are not resisting the sideways push on the sail and mast sufficiently. Your windward helm problem reminds me of when my wife and I started sailing - I sometimes went home with a sore back and shoulder from fighing the helm. Some friends taught us to flatten the sail using the cunningham, outhaul and backstay, and then ease the traveler and mainsheet. If that doesn't work, its time to reef. By the way, we've been using a 150% gennie on our h23 for about 10 years. We generally take it down before average wind hits 15kts because it overpowers the boat. I assume the 5'6" past the rigging you mention is gennie clew aft of the side stays chainplate. That sounds about right for a 150%! Remember, the 150% means the distance from clew to the perpendicular on the sail luff is 1.5 times the distance from forstay to front of mast. Next time out, try flattening sails, easing trim our a bit or reducing sail area when the wind hits 15 kts. A h23 is easily enough driven that you'll find yourself going as fast or faster, with less heel and less work for you and the boat. I had a problem with getting the head of mast sufficiently forward, so I went to a local welder and had him cut me a new SS plate for the split backstay, about 5 or 6 in. longer than the original, and added a backstay adjuster. If you want, I'll run out and measure it. It cured a lot of problems.Remember, sailing on your ear is not only hard work, its slow.JIm Kolstoe, h23 Kara's Boo