Chris,

As Archie said get the bondable teflon sheathing part # T2070E-6 that is 6 ft or part # T2070E-B which is 10ft at 1.60 per foot. I had to do the same thing to a V2 and I think it was Pete C. that did this, but in the lower deck at the tube exits cut a hatch about 6" long so you can make sure you properly clue the rod sheathing in place. You will also make a latter support for the sheathing to be attached to from the exit through the fuse to the servo area. This is made with 1/4" sq balsa sticks. Glue the sheathing to sticks and every 4 to 5 inches wrap the stick and house with thread and CA that area. Make sure you test fit and and align everything before gluing to the fuse. Once things are correct with your deps and things work smoothly then reattach the lower deck piece. Below is the link to CST Sales. I hope this helps and I'm sure there are other methods that may work better but this was the best I know of and it works.

http://www.cstsales.com/index.html

Larry