Yes, the premade, bolt on, sliders have the leg shaped to go around (under) the CAT. You would not want them below the slider, they will get destroyed. I built my sliders so I actually did cut the CATs off and raised the whole system up to get better ground clearance but even then I had to shape...
Sorry to hear that. Seems like a common story about getting good service these days. Shame you aren't closer I am always down to help people out with their builds.