First one? if so think about turning the lunette 180 degrees, you'll gain around five inches and tow better. It's not hard to do. You'll need a 1 1/2 inch wrench a socket will not fit. A new cotter key, bring an asortment, tools to remove old cotter key and a big sledge hammer. the lunette will need a love tap to brake it loose. Hit the back of the ring part after the nut is loose and it should give it up. Good luck and have fun.