Now, some people get nervous because @ this stage, your ram will not keep up with the speed in which you are trying to turn. A simple 10 min. pump mod will take care of the problem. Some people shim the spring inside which I have heard will burn up a pump. For this part, I used a 13/64 drill bit, drill, 17mm combination wrench, and a crescent wrench. Remove the High pressure line from the pump and then the restrictor itself. When removing the restrictor, be careful that the spring inside and the plunger do not shoot out and become lost. If you are careful, they will just sit inside when you remove the restrictor.