[Myron Piatek]

I never ran screws and never had a problem. But the slicks may rotate several inches through the first several runs, then "settle in". I put a shoe polish mark on the tire next to the valve stem to gauge any movement. Swapping tires from side-to-side between races could help get it back closer to the original location. If you are nit-picky, you can always check the balance again after it "settles". But it's usually not noticable.