The lines can tend to rust out over time. This is what my lines ended up looking like around 15x,000:
[img][image]http://i36.photobucket.com/albums/e23/nuclear3579/IMG_0823-1.jpg[/img][/image]

Just get new line from the store and replace them. You'll need a pipe bender and cutter and possibly compression fittings. Not hard to do. Make sure you bleed in the correct order. My end result:
[img][image]http://i36.photobucket.com/albums/e23/nuclear3579/IMG_0826-1.jpg[/img][/image]
New lines run all the way back. good luck. <img src="/forums/images/graemlins/cheers.gif" alt="" />

Too close for missiles, I'm switching to guns...

'97 4Runner...SR5, 4cyl (3RZ), 5spd, 4wd, no rust, excellent shape.