Im sponsored by Schumacher and race in Australia. I havent used the threaded shocks and see no real need for them. Teemu doesnt use them or two other team drivers I know in England. There is nothing more precise for getting equal side to side adjustment than spacers. The only time you might want threaded shocks is when you are setting tweak on scales or an MIP tweak station and the smallest shock spacer makes the car slightly off balance. I have never really found this and the difference would be minimal.