I have a little bit of a queery for the jeep experts, i have a 96 jeep cherokee, with a 4 inch lift and 31 claws. Whenever i climb approx 20degree incline and up, i get an intermittent thump which sounds like it comes from the front passenger side of the car, it doesnt do it with the rotation of the tyres, its just now and then, im curious what it is. Any ideas?