This is really a new post vs reply(forgot how to post new!). I have been working on my "88 501 since 2013 and am ALMOST near done, if there is such a thing! Eg: rebuilt port eng w/900 hrs due to riser failure, ,complete maintenance on all engines, pulled/rebuilt running gear, rebedded all 157 screws on bridge, reconfigured bridge with custom davit crane and 12ft tender, new galley, and all soft goods new AC pump, HW tank, much more and finally a COMPLETE NEW Awlgrip paint job by Diversified at Ft Meyers 2015( not cheap but looks unbelievable and NEW!). I've gained experience on "most" of the systems( happy to share if you need any help) but need some help on 2 issues. Does anyone have a potable waterline diagram and also any experience on the fuel 6 port fuel valve? I am going to replace as many water lines (and the pump system) as I can with the new "pex" (red and blue) lines and shark bite fittings and at least open and clean the one accessible water tank which is in generator bay. I am going to replace one of my 6 way fuel vales as it's acting like the bottom section "snapped", can't see any other explanation due to the way it's performing. Thanks, PS I "think" the late 1980s 50 Connie is probably the same water and fuel set-up.