Im thinking about buying a 1968 Glastron 142, 65 hp Merc/Kiekhaefer...my question is that i see a lot of harline cracks (very fine) in the fiberglass on the stern of the boat...can anyone fill me in on this, is it serious or just surface...thanks for the replies...Oh, its all original, motor looks like new and i can get it for about $800...whatcha all think...?