I have the factory book as well as Randy's guide that came with the Smyth mylar (Pentex? I'm not sure, but they are dead now) pinhead sail. Tune is dramatically different for the Dacron and high tech pinheads. Do you know if the sail was cut for prebend? To my understanding, most of the pinheads were not, while the MX's were. Anyway, I'll be in Austin briefly each of the next two fridays; where is your boat? Simplest, really, tho, would probably be to copy and mail you what I have. My email is on my profile.