Hello everyone. This is my first post. Now a Beneteau 38s5 First owner. My acquisition is not without some reserves. Not because of the work on the boat - love that! But because I will be going from a motor sail environment on my 35 Coronado (restored in Vancouver BC in 2003) to a fast sailing vessel with critical trimming. Anyhow, I am now repairing the fire damage on the Beneteau in Trinidad and came across a leak in the port black pvc fresh water tank. Is there a way to seal this leak which is a slow leak?