North Sails Guide AND Loos Gauge
David is right about the North Sails Guide, but I think it should be noted this guide, as found in the Catalina 22 National Sailing Association web site under Technical Tips, works in conjunction with mast tuning with a Loos Gauge.However, this guide for setting shrouds and stays assumes you have a backstay adjuster. Without a backstay adjuster, no matter how tight you get the forestay and how loose you get the backstay, there should be some rake backwards to the mast that Catalina defaults into its design. Basically, the backstay is made a bit too short to provide some flattening to the main so the boat is safer in windy conditions.A Loos Gauge is important, and you will be surprised at how far off you are from proper tension. The gauge should even come with some suggested readings for the 1/8" wire on C-22's and I found them to be quite good.I think it is best to get your shroud, stay and sail controls in place before condemning your sails and putting a lot of money into new canvas that does not set properly.