I cant get my front brakes to grab. I have New Pads and put in new brake fluid DOT4 , and they dont work. Ive bled an bled, I got it to were the calipers flex when I pull in the lever, But no dice. They work if I want to push my banshee around . The rubber in the Master cyliner is correctly inserted, Any Ideas on how I can get these Mfrs to work.