2012 Yaris "noise"

[code54]

We very recently purchased a 2012 Yaris LE HB (23K miles) and I noticed it has two odd noises. Sort of a knocking sound in the front and also the rear at LOW speeds. I have pulled the entire interior out of the car and added sound deadener (for the stereo and to kill some road noise) and the knocking is still present. I know it was not from me taking it apart since it was there before I started.
It is a deep solid sounding "knocking" noise at very slow speeds, (just a knock, knock, knock, then nothing more) and seems to only happen when turning. I don't notice it a higher speeds or on "normal" bumps in the road. Mainly when in parking lots making slow tighter turns.
I have confirmed it is not in the car so I am leaning toward the suspension. I pulled and yanked the heck out of the muffler and it does not hit anywhere. I didn't find any leaking oil from the suspension members.
I am planning on jacking it up and putting some stands under it and looking at it more closely tomorrow, is there anywhere I should specifically concentrate on. I would like to find the noise then only take it in under warranty for the dealer to fix. I know how they never are able to reproduce the noise so I would like to be ahead of the curve a bit and get them looking in the right place to start.
Thanks for the help in advance.