Burn out issues

I was attempting a test and tune Saturday. I was going to try Vikings recommended shock settings. Double check my bar adjustment. Viking suggested my shocks were topping out.....I have extensions for the rear may try to get some bayonet extensions for the front. I really double that though but it won't hurt to try. And no I haven't touched a thing yet but I have to get my 60 foot times consistent so it's happening. I did verify the rear axle was square in the car though.
Our axle measured square also. It didn't work. We shimmed the rear springs and copied the location for the inboard kit. That is why we are making our new car with adjustable perches. Turn of a wrench you can move the rear front or back on either side.