That doesn't explain your pedal not going full travel. I've used SS lines on several cars, and had the problems with getting the fluid to seal so I started using my vise grip designed for nuts......works great. While off the car, I take the component, be it master, prop valve, T, whatever, and place them in the vice, then take the corrosponding line nut and seat them several times. You can get a bit more of a turn for a few trys, then nothing more....and you've just created a perfect mate. Now, while on the car in non-optimum settings, it's much easier to seat them with your quality line wrench.