I did exactly what you did. Only my TV was a 2001 Dmax dually CC.
I noticed that the ride was bumpier when I was lightly loaded, but settled down nicely when loaded heavy. Two things likely caused this.
First, I did not reset up my hitch. This likely meant that the same bar tension on the longer shank resulted in more weight transfer, which likely caused my rear axle to move off the overload springs.
Then when hitting a bump, the axle would make contact with them, and the spring rate would change,,,making for a bumpy ride..I was going to make a adjustment to see if it could be dialed out, but ended up selling that truck.
Since you reset your WD, and likely do not have overloads, it will likely handle just fine for you. Let us know as I am curious.
My new truck is towing with the same hitch, but of course it was set up from scratch, and it works great.
And I am a big proponent of being able to open the tailgate. Gotta load/unload stuff, and it prevents those nasty dents when the tailgate hits the TT.:B