Thud in 4wd

[Ronin152]

I have a 2003 Nissan Pathfinder with a 2in lift and 32in tires. The front is IFS. With the lift the front CV angles are extreme but still within factory limits. Anyways with all the snow I was driving around in 4wd Hi and noticed that when I seemed to go over 20 mph or like 2,500 RPM there seemed to be a thud coming from the front right cv shaft / wheel. As the speed or RPM increased the thud kept increasing in intensity.

Could this have been?
1. Snow packed in the wheel/brakes/cv shaft?
2. When taking my truck in for inspection the mechanic did not tighten all the bolts properly on the wheel and a couple days later I discovered this. Ever since then I have had a squeak in my brakes. Don't know if that could have possibly bent something?
3. CV's were just recently replaced due to cracking of the boots. Improper install?
4. CV is operating outside of its range of motion and binding up due to too much lift?

However, the thing which I don't understand is that my truck has Full Time 4wd and the hubs are always locked in so they turn even when in 2wd and I do not hear the thud if they were binding in 2wd.

What do you guys think the problem is?

[Ronin152]

no one?