Dunedin Causeway folks have done a lot of used Tornado sails on Mysteres as well as GCats . We are blessed with Robbie Daniel in town and he often has used T sails, both old pinheads and newer squaretops. The Mystere mast is the same as the old Sailcraft Tornado extrusion and the Tornado sails work great on our boats. Here is a M6.0 and a M5.5. Note the 5.5 had the head recut to shorten about 12 inches. Write to Jill Nickerson for sail info at funinthesun(at)juno.com