[shorod]

mwt878991 has a good question, why were you changing the line? It wasn't for a similar problem, was it?

I wouldn't expect the way you bled the brakes to cause your problem, but you may not have bled them quite right. It depends on if you did it the way you mention, or if you left out some details. When did you open the bleeder screw? If you opened the bleeder and your friend pumped the brakes while the bleeder was open, then he pressed the pedal to the floor before you closed it, that could cause issues with braking performance. But I would expect weak braking rather than grabby brakes.

You should have your friend slowly press the pedal down, starting while the bleeder is closed. Open the bleeder 1/4 to 1/2 turn while pressure is applied to the pedal and close the bleeder just before the friend reaches the the end of travel with the brake pedal. You may need to repeat the process a few times until all the air is out of the system. If you have him pump the brakes while the bleeder is open, you're likely getting air drawn back into your system on he upward stroke of the brake pedal.

Again, I don't think the possible process to bleed the brakes you used would lead to grabby brakes, but it may be worth bleeding all 4 wheels again to be sure.

-Rod