A lot of people like myself have had issues with the turnbuckles being stiff. J.R. Mitch looked at mine this weekend at the Clash and said that's too tight and then walked over and grabbed a big pair of pliers and said "squeeze the rod ends with these". I then took them off and the ball was tight and so I squeezed the rod end with the ball still in there and "presto" instantly free and loose. He said Gil Losi showed him that years ago.
Go try to roll your turnbuckles back and forth on the car and see if it feels free or not. All the ones at the Clash were tight even after all the practices and heats. I'd use pliers that don't have teeth so your ball ends don't get raggedy.