I'm helping a couple of new sailors with the 1977-28 Pearson that they have purchased. The previous owner had the batten pockets sewn up and there are two minor rips near the head. Before they spend money repairing the sail, I'd like to see if we could replace it with a better used main. But I need the luff and foot dimensions. Anyone have them. ? I looked at Sailboat specs but they are unreadable. Ernie