I think your advice is sound. My problem is that I've relocated 700 miles from the dealer who serviced the car. I had it serviced so I would be comfortable driving it that distance and would not have to deal with it upon arrival to my new residence. I guess that back fired on me!
The service was "A/T Transmission Fluid Flush" $180.00
The sound reminds me of a transmission slipping on an old chevy 350 turbo. I wish I could describe it better...
I took my 05 4Runner to the dealer at 110,000 miles for a transmission service. Since the service it has an odd sound / feel when I let off the accelerator especially at lower speeds. For example - when I slow down and it's shifting from 3rd to 2nd, it has a higher pitch sound for about 2...