Okay so.. im a NEW begginer, and I need a little help with my machines.. I bought a kit off of ebay, and i recieved two machines, i believe they are gold bullet and red bullet machines. anyways the main problem im having.. after two days of using them.. im having an issue with the (shader). I have been doing tons of research on this and ive read that shaders are to have the contact screw at the tip of the front spring and that the gap should be about the size of a nickle from the spring to the contact screw when pushed down. well ive done this.. but when i plug it in, and push the foot pedal down.. nothing happens. i have it set around 8-9v. Heres the kicker.. if i screw in the contact screw down quite a bit.. then it seems to work.. but then theres not much movement in the needle. it only moves up and down just a hair because theres no room the for a-bar to move up and down.. does anyone know why or what i can do????