This guy gets it.
When I see people have this problem, it's almost always the shock rod end not being installed all the way. If you build the shocks right, shim everything properly and put the shocks in the right place you'll have no issue.
If you try to run your front shocks in the inner hole on the arm you will need to add limiters under the piston.
Take your time and double check your work, that's what I do.(sometimes I get it right on the first try, lol)
You're building a race car, not a monster truck...