I have this guys older brother (8G005) on my bench right now waiting for me to re-align it. On mine, both can caps are insulated from the chassis, as is the tuning condensor. I replaced all the electrolytics and paper caps, which for two or three of them involved temporarily removing other components in order to get to them. There was a bad mica in the tuning assembly getting to which required partially disassembling the tuning assembly itself. All in all, one of the less fun recaps I've done, but its a nice radio, will be nicer when I get the alignment touched up.
There is some documentation of your set here:
http://www.transoceanic.nostalgiaair.org/
though you may already have all you need.
Another alternative for preserving the expensive 1L6, someone sells an adapter that allows you to use the 1LA6 Loktal tube. Some information here:
http://bellsouthpwp.net/p/a/padgett46/bilh1la6.htm
Here's an ebay site selling the adapter (no affiliation).
http://cgi.ebay.com/1L6-to-1LA6-Adap...94716360272430