I recently purchased a 1978 Morgan 382. Cockpit scuppers and lower deck scuppers all drain to a pipe just above the water line that runs horizontally from port to starboard with through holes on both sides. It is hard piped in PVC, about 2 1/2 in diameter, which concerns me. Just above this larger horizontal pipe are other pipes (about 1 1/4 in) which tee into the pipe where scupper drains are also feeding. This upper piping is fed from the bilge, separately from the shower drain, and also from the refrigerator hand pump. All of these systems seem out of date and prone to failure as there is a lot of PVC (hard pipe). Do you have any suggestions?