banshee brake lines get a lot of air trapped in them especially in the T. I run 450 calipers 450 master ans stock lines for now. Too lazt to put my braided ones on. bUT you have to get a mityvac brake bleedr and blled brakes from the caliper. so much easier and very fast. Harbor frieght has a knock off that works great too thats the one i have. By the way i have 97 stock lines and no probs at all so i dont think its your line