owned my 2007 Wrangler for a few months and never put it in 4wd so this morning I Was out today and found a muddy dirt field and figured what the hell, i drove in and put it in 4wd to check it out all was good till i turned, i didnt turn it sharp only to turn around and the steering wheel started jerking awful when i lessoned the turn it stopped so i tried it the other way and got the same thing, this cant be normal...any thoughts?