I think I said hi to you at the Safari...terrible luck for sure. The copper line doesn't just fall out so I'm guessing it was an installation issue or damaged before...either way-- 1900 miles one way for it to not work... sucks ;(
DS angles are not an issue with the ZF/203/D20. Less of an issue with a Titan as your doubler since it's only 5.33" long... how do I know? I ran a ZF/203/D20 for a dozen years never experiencing a single angle/Ujoint issue with tens of thousands of miles. Got a buddy still running his-probably 60,000 + miles on his-maybe more.
You said you had a 205...you are on your way... the Titan by NWFab link here:
http://www.northwestfab.com/Titan-Series-NP205-BlackBox-i_p_2402.html
is designed specifically for the 205 and their goal was/is strength and a short package.
Your ZF/Titan/205 would be the shortest doubler package available and would be shorter than the doubler setup I ran and therefore unless your trying to run a huge 5.5" lift or more, you won't have ANY driveshaft angle issues...
Why do you want to dump the 9"? I realize the copper line failed for some reason, but is there more?? Expensive swap for a part that doesn't fail on it's own...only during installation.