The rubber end part at the mainsheet traveller on my 1988 Hunter 28.5 has been broken (or exactly disintegrate, probably because of sun and rain it has been exposed for from it was new). I'm living in Norway and my probleme is to get a replacement for the broken part. No boat part dealer in Norway has so fare been able to find a replasement part. It has a "S" at the end and a shark or whale swimming through the "S". Can anybody give me an advice where to buy a replacement part.