I got a question about my 4x4 drive. We have gotten a lot of snow this year and I have had to use my 4wheel on and off this winter. But just lately I have had to use it a lot and when I kick it out of 4wheel some times it makes the truck jerk or kinda buck while driving. Is this normal? I have a manual 4wheel drive. it doesnt do it all the time, just some times. I thought before i just hit a drift or a snow chunk, but now im starting to think it is my 4x4. do i have anything to worry about?