I started with pushing my caliper pistons back to change my pads. When I went to push the brake pedal to align the new pads there was no pressure. I've bled the brake numerous ways. The syringe method, gravity bleed and traditional, but no matter what I try i still have no pressure. When i compress the pedal, bubbles rise in the mc resevoir. Do you think my seals are blown or do i just have trapped air?