Yup, that's the big one's.... What size are your front's? The big calipers are going to take a bunch of pressure to get applied, might want to start at about even front and rear pressure.....if the front calipers are smaller, I believe this is going to be your problem... I usually use the smaller metric calipers on the rear.....Curious to hear what your brake pressures are...if you have the correct adapter, checking the brake pressure at the bleeder valve is going to be the most reliable test....