I decided to take out all the rail parts. I gently filled the tank with a can of that expanding foam. trimmed off what came out the holes,dabbed on some black paint when it dried. Took the very small cotter pins (also painted black) pushed them into the hardened foam,pulled them out put in a little rubber cement put the pins back in. Took some black anodized wire and fed it through the pins. In the center under the platforms, I took a small black wire shrink wrap tubes and heated them up over the loose ends so the finished product looks like a turn buckle connection