ds400

Hi guys need some serious help for my setup. I am new to 12th and come from touring 1/10th. Our club just introduced 1/12th racing so its hard for me to get pro advice on my setup.
We run on asphalt [low grip] and race 1/12th mod. I have a XII xray.

My question is as follows:

On asphalt how do I setup my screws on my tbar?
On the book its more for carpet racing and states to set the screw so that the slightly touch the chassis. Is that the case for asphalt racing as well???

Now when I look from underneath the rear pod, and push on the left rear tyre, then on the right does the rear pod need to "spring" back flat to the main chassis???

Thanks