I'm extremely dumb to this so please don't ride me too hard about it. I replaced the drum brake axle on the rear of my S10 chassis with a later model disc brake setup off of a 99 S10 blazer. I got ready to bleed the rear brakes and I'm not getting any fluid to the rear brakes. I thought I should at least get a little fluid back there. I disconnected the line from the caliper and I'm getting nothing. Please help. Thanks.[S