[enslow]

Air is getting into the system some how, or not fully bled.

I see some people bleeding brakes by simply opening up a bleeder and pumping the brake. If this is how you bled the master cylinder and brakes, you almost certainly have air in the system. If you close off the bleeder each time while letting up on the brake pedal, and make sure at least 2 or 3 pumps have no sign of air, you can be pretty sure that the system has no air to start with. Then I'd clean all brake connections thoroughly, press firmly on the brake pedal and look for fresh brake fluid.