New rear caliper, rebuild kit installed on master cylinder and i cant seem to get enough pressure built up to really move the caliper. I spent 2hrs bleeding the system, is there anything special to this. ive done brakes on cars many times so i really thought this would go smooth but has not. I have a 25mile ride tomorrow and it would be nice to have this working. I didnt reinstall the E brake could this have an impact on how the caliper operates?
I appreciate your time

Thanks

 

what kind of atc is it?