I am replacing the tanks due to a problem compounded (to be honest) by operator error. I cannot draw fuel out of the port tank no matter what I do although it draws fine out of the starboard tank. I was not able to remove the draw tube as whatever fitting is on the end will pass through the fitting installed in the top of the tank. In the process of dealing with this issue, and not focusing sufficient attention on the fact that the top fittings are cast into the rotomolded plastic, I distorted the withdrawal fitting on the top of the tank. Presto, boat owner makes a bad problem worse! The only solution is to replace the tank. After doing research on the C-Brat site, I realize that 2004 is about the vintage when C-Dory was having some tank issues and changed suppliers. I figured that it was bettter to be safe than sorry and that I should replace both tanks while I was at it.
I had been planning on removing and reinstalling both tanks this winter anyhow to check the core underneath, drill out the core and epoxy fill it and most importantly, straighten out the vent hoses, which for both tanks have serious kinks in them. The kinks are serious enough that the fuel fill operation will likely spurt due to improper venting. However, I do not think that inadequate venting is the reason for the inability to draw from the port tank because the kink is not that serious. On top of all of that, the vent fittings in the sides of the hull point forward and do not loop upwards to prevent water ingress.
As long as I was going to do all of that, why not deal with 2 new tanks and get everything straightened out once and for all plus it keeps the tanks symetrical in terms of age and capacity.
Jim