i have a 2000 wrangler 4.0L. It has 31" tires. When i put it in 4H it seems to pull to the right (maybe an alignment issue???). When i take it out of 4H (going anywhere from 20mph-50mph) after about 10-15 sec. the pull goes away and there is a pop noise that i can feel. It is significant enough to slightly shake the steering wheel, but doesn't really feel like its coming from the front end? Any ideas? thanks