Yep, bending aluminum tubbing can be a real pain. I had to order extra tubing in both 1/4 and 3/8, as I had to create the fuel and brake lines several times before I was happy.
I did order some flexible brake lines from Bonaco, Inc. They have a brake system to replace the plastic tubing used between each brake pad. I think they are also putting together a flexible option for the fuel lines as well.
I think I talked to 'Brett' at Bonaco.
http://bonacoinc.com
If you do a search on fuel lines, I think you find other suppliers as well.