I have two sets of those exact oars. A buddy started a whitewater rafting company several years ago and bought 20 pairs. Turns out, they were heavy and not real good for white water rafting, but nice for backtrolling in a drift boat. To make a long story short, he gave them away to a lot of people. The guys who left them in the boat outside not covered found that they de-laminated real fast. If you keep them in the garage or something, they last a long time. I like them, most people think they suck because they are so heavy. Rather than re-build or repair them, I would just get some different ones, or if you really want those, I know where you could get a new set for pretty cheap. They don't make them anymore I don't think. He has some in a storage shed, both 9 and 10 ft lengths.