I just installed a front disk brake conversion and now on both front disc brakes the brake lines are leaking right where they attach to the caliper. These lines have a both that goes throught the brake line then screws into the caliper. Brake fluid is dripping from the bolt head. There wasn't any washers with the brake line bolt. I tried to adjust them as one side is beveled and has a notch. That didn't work. I just bought copper washers but haven't installed them yet. Do you think they will work or should I try something else. Any recomendations are very appreciated. Should it have a washer period , rubber. Please help.

YES!!....U R correct!....U need those flat copper washers installed or it will leak like a son of a bitch!

Yes, and sometimes it will leak even with the copper washers. Verifty which direction the end should be installed with the vendor but believe the beveled edges face upward - mine leaked with copper washers and then when I flipped them and installed new washers this stopped. One time I recall one being very stubborn years ago and actually stacked two copper washers which cured it. I can't believe they didn't supply you with washers - that crazy!

Fix it quick before all the paint in that area is gone.
-Doug