590sn case brake help

Hey. I did a brake job on a case 590sn backhoe. Now the brakes stick. I have the service manual and it says to replace the auto adjusters for the brake discs. When I called the dealer to order them they told me they have never sold them or replaced them. My question is do I need to re set the auto adjusters some How? And this is why my brakes are sticking? It's the only thing I can think of causing a issue. I will say I changed the piston seals while in there. Brakes pump up fine, just don't release all the way. Everything went together well. So any help would be great. Thanks