Braking System for Tow Vehicle

I have the ready brake system with my Class A Sightseer 34' and Toyota 4Runner automatic with drive shaft disconnect. I am having one heck of a hard time getting it to work properly. It appears the brakes on the Toyota are not releasing. I have talked to the mfg. and they haven't been a lot of help. Said I needed the anti rattlers cuz there was too much play. That didn't work at all. I'm about ready to thro it in the ocean it has been such a hassle! Do you have any suggestions? The only thing that I wonder about is the break cable is not going down the middle thr the release lever on the top of to bar. Any help greatly appreciated!