manual tuning procedure
Slacken off everything.Using the main halyard as a plumbob with the winch handle tied on it for weight, adusts the forestay and backstay to get 6 inches of rake, measured along the boom, which you have on and pigtailed to the backstay.With the rake set, go from side to side on the sidestays, in mirror image pairs: begin with the back sidestay, then the forward one. Those are the pairs that go part way up. Snug them, but twang them to get the sense of tension. Then do the center sidestay, carefully, 1 turn at a time, or you'll bend the tip of the mast sideways.Get away from the boat with her sitting on her waterline, and look at it. If the mast is centered, back on the boat and snug it down hard in pairs, back and forth, on the sidestays. The shrouds should Thrumm when you twang them.Finally recheck the rake because C-22's really need this 5-7 inch aft rake on the mast to go to wind. Harden them off.Whole procedure takes 30 minutes and guarantees you a good sail.