I need two 15” lines to finish the back brakes. The ends of the flares weren’t even or round using either tool. I probably tried 15 times and had 1 decent flare. Now they are too short to work but I keep trying to figure out how I’m using the tool wrong or whatever. Obviously I need double flares on both ends.

1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.