Front wheels jerk when in 4X4-any ideas?

[Timstrk]

Yes, that is right. The front and rear gears are rarely ever the same- exactly. 4.10 in the rear, 4.09 in the front. Close enough in the mud, dirt, snow etc. On pavement there is better traction and one end has to give up the difference. This happens as tire slip in the dirt but not on pavement. Walking back and forth is the trucks effort to equal things out. Low range without locking the front hubs, if thats an option, auto hubs and all, would work to pull the boat.
hope this makes sense,

Tim
74 Bronco Ranger halfcab
w/toys