I've got a ford E250 cargo van and the brake line to the back passenger brake went out. I got the old one off easy enough and bought a new copper-nickel brake line at the parts store. Installed it,bled it and took it for a test ride, everything work great. So my dumb butt decides to double check the new fittings to make sure they're snug. I tweak the one that runs over the pumpkin and into a brass block and it start seeping, reinstalled, still seeping. So today I go and buy another new line figuring I messed up the flare. But when I installed the second new line I still have fluid seeping up through the threads. Does anyone have a clue what I'm doing wrong and how to fix it? It's a 1998 van and getting to rusty to take to jobsites and will be replace later this year so I really don't want to spend $$$ to have it fix. Any advice would be greatly appreciated.