Drum brake installation troubles...

Providing all parts are correct, which they look like they are, I would suggest to the OP to remove the rear shoe and clamp some vise grips on the end of the cable and pull it firmly through the casing to make sure it's positioned properly. Also correct the upper left spring.

I will stick to what i said in the beginning that the e brake cable is slightly applied and creating the majority of his problem.

I guess we have to wait for the OP to clarify what he finds.