OK well here is the promised picture of the topcap. You can clearly see the 2 grey colors. That is the second batch of the JB Weld that will hold that bulkhead in place. I needed to reinforce the top cap just a bit with an extra layer of pvc.
http://i101.photobucket.com/albums/m...ps81969446.jpg
Hopefully next pic and update has the Cap glued on and bioballs in.