I think I know who you are, wheezy. I watched you last Sunday and you did good. 15t pinion is definitely not enough to clear the tabletop-single so try 2 to 3 teeth higher...of course don't forget to check your speedo and brushless' temp. Since I also run Tamiya, here's the suspension setup I use:
Front:
32.5wt oil
stock springs
stock pistons (per manual)
Shock tower placement (from outside): 2nd
Arm placement: middle
Rear:
32.5wt oil
stock springs
Stock pistons (per manual)
Shock tower placement (from outside): 3rd
Arm placement: middle
You can try this setup and afterwards change to your liking.
See ya tomorrow night (I'm the Silver and Black Tamiya).