I understand what you mean about the rails. What I mean is that with the pro rails and the OEM Khaos limiter strap, the limiter strap is tight just sitting on the ground. More of a geometry thing then rail tip up / angle of attack.Talking with ice age. The rails are only 3% of what makes a khaos act the way it does. I did everything but the rails and i noticed a difference, but I also added aftermarket shocks which gave me more adjustments Tighten up your front track shock and loosen the rear shock.
Also make sure your front track shock is a khaos shock
I think with the Khaos rails the limiter strap is less taught. I had the shock on the skid after swapping in the takeoff Khaos shocks before I installed the limiter strap. I was worried about the shock topping out. I made a measurement from the top suspension mount point to the rail at a fixed point.
After I installed the OEM limiter strap the same measurement was over 1/2” shorter. So I feel the combo of OEM Khaos shocks and Limiter strap with Pro rails won’t give you the full extension of the Khaos shock. I think an aftermarket/ longer limiter strap is what is required to give the full effect without having Khaos rails.