willi4nd wrote:
My dealer showed me how to set up the WD bars, basically to adjust so TV and TT are level and to make sure the distance is the same on front and rear tires of the truck.
Mistake right there. Never rely on a dealer knowing how to set up a WDH correctly. Read the sticky on this sub-forum and learn to do it yourself. What is the rating of the spring bars?
Running correct tire pressure on TT and TV? What tire type does a Frontier have, P or LT?
Go to a scale and determine actual tongue weight, TT GVW and actual TV payload capacity. Take scale weight of truck and subtract from GVWR on poor pillar sticker. Payload capacity is very important. I would expect the actual tongue weight to be up around 800+ lbs based on the GVWR of 6900 lbs. Dry tongue means nothing. If the Frontier tongue weight limit is 630 lbs using a WDH, you are likely be over the limit. What do the asteriks say? There's usually a max. weight with WDH and max. weight without a WDH.
It's okay for rear of a TV to squat a little and is normal. Hard to tell, but it looks the nose of the TT could be dropped a little. You may find it works better if slightly nose down.
As mentioned, I would also say the TT is too much for the truck.