Make sure you jack the rail up so the tires are not touching the ground, then add the nitrogen. Get it where you want the ride height, if it still bottoms out, you can add up to 30cc's of oil to them. Make sure you get shock oil, you can get it from Kartek, and it would be a good idea to get a no air loss gauge to inflate the shocks so it's accurate.
To add the oil, jack the rail up so the wheels are not touching, let the nitro out of the shocks, remove the entire brass inlet valve assembly, and use a syringe that you can buy at walmart or other med places.......
