I found a leak at the connection of my 1988 Hunter 355 Legend exhaust hose and thru-hull fitting. Water spits into the dead space and accumulates there, before partially draining into my bilge. So, I need to replace the exhaust hose or a section of the exhaust hose. Does anyone know the typical length of exhaust hose used from the engine to the thru-hull fitting; the inside exhaust hose diameter and the outside exhaust hose diameter?