We have just purchased a 2016 Cardinal Fifth Wheel 3250 RL with three individual control valves for the three slides. We were told by the sales engineer that we could easily isolate each slide from deployment or retraction by opening/closing each individual valve and then activating the remote control to deploy or retract the slides. What he did not tell us is that the computer control system that controls the action does not start or stop the deployment or retraction of any individual slide upon activation of the buttons on our remote control device. There is often a few seconds of unwanted extension upon release of the button on the remote. We almost knocked down our neighboring brick wall before we realized the problem!!
I would have preferred a control system for our three slide-outs that was engineered with three, separate electrical motors to activate the slides, in or out, with a selector switch for each slide. With that system you would have positive control over each slide.
That said, we are living with our new Cardinal and learning to predict when the slide deployment control stops before it hits our neighbor's retaining wall. We are also striving to be patient with the lack of response from Dennis Dillon RV in Westminster, CA, in regard to our ongoing warranty claims issues. So far, after nearly five months of effort, their response has been totally unacceptable.
My advice: get the individual control valves for your slides, and never deal with DDRV in Westminster, CA.