Robert 
2007 Nissan Frontier Crew Cab SE 4dr Crew Cab 5.0 ft. SB (4.0L 6cyl 5A)
Bumpy take off
 Truck runs great, drives great, however I have a "bump start" feel on launch from a stop. Very annoying. Drive shaft already replaced but they are looking at it again this week. Too much grease in the slip yoke causing the drive shaft to "hang" or stick and release when the brakes are released and you accelerate. It feels like the axle moves out from under the truck and then the truck moves. I can only feel it in the seat. You can put the truck in neutral and it won't do it as it takes the pressure off of the shaft and it equalizes. 