I concede on the sump issue I suppose it depends on your definition of sump. I regard a sump as a significant low point in to which all loose water will drain. Cessna having to add 3 extra drain points to their tanks says to me that the "sump" ain't up to much.
I have ammended my post to try and make it read a little better.
Criticism always welcome.
Last edited by ericferret; 2nd Jun 2013 at 13:57.