parking brake not holding

[FRANKENSTEINC10]

hello guys. I need help adjusting my parking brake. its been almost 5 years since my truck has been on the road and I can see the end in sight. just need the parking brake to hold to pass inspection and I'm good!!! how far apart should the main cables be from one another? (u know there is only one , but I'm talking about the one that pulls tension from the pedal and the other on the passenger side that holds the rear cable in place) right now they are pretty close together. I have adjusted the screw and all the cables are tight when the brake is engaged but it won't hold the truck in place? should I check to make sure the shoes are good or is it something simple that I've overlooked. thanks in advance everyone