I recently purchased a Pearson 28 from 1975. The hand pumps in the galley and head are not operating. Seals all dried up and shot. The Galley hand pump is a Topsider and it is no longer available. Does anyone have any suggestions of a pump to replace it?? I don't want to go electric pump. BTW in the head it is a long narrow hand pump very simple again the seals are all shot so need this replaced as well. But it's a funny install. The sink is a basin and goes up and down to get out of the way and the pump is very narrow and long right next to it.