it goes "clunk"
 

I have an 04 Limited AWD 4.7 V-8. After comming to a stop, as soon as the brake is released and the torque wind up on the drive shaft is released, I get a diffinite "clunk" from the rear end. This happens at every stop. When I bought it 2 years ago as a certified toyota, I took it back to the dealer for the same complaint. They greased the zerks on the drive shaft and u-joints and it went away for about a year. I finally got around to doing it myself last week and it's about 50/50 now when it clunks. I sent it back to Longo toyota late last week and they say "it;s a normal sound for this car and the Tundra" Are they right and I should just live with this or what? My brother has had 2 Tundra's with no clunk, my company has 6 Tacoma's, 2 Tundra's and 1 FJ, with no clunks. Any advise?