many people dont know if you take your spark plug out before a race and re gap the plug that you can get great time improvements.. best thing to do is see how far it is visually.. then bend it just about as down far as possible till it touches the post in the center.. see if you can slide a single piece of paper between the two... if you have just enough room for one piece of paper you are good...... and then ready set go.. the amout of anger this will give you will motivate you to buy more parts.. good racing and good luck to you all