I also have a modified clutch, changed out the fluid on a stock clutch. Same day, 3in lift 32.7in tires.
On a side note had a good time leading the tow rig to camp in the dark.
This leads me to think other issues or the new fan played a role, after watching all the drone footage, we all drove about the same speed with a couple of exceptions.
That was one wild ride getting towed without power steering, or brakes in the dark in a dust cloud, couldn't see 10 feet in front of me for 2 hours. Tony was the man for stepping up to pull me offroad for 30+ miles. My arms, back and legs are still getting cramps from the white knuckle ride.