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4 While our rockers were spending some time at the spa we focused our attention on removing all the old components. When removing poly locks, loosen the outer and inner portions together instead of trying to bust the lock insert loose by itself. We also recommend rotating the engine so the rockers you are removing are not trying to open the valve. Once you have loosened the poly lock it should simply thread off of the stud, which allows the rocker arm to slide off.