OK, I bought the #21 Fredette springs. Do I need any special tools to swap the springs? I have the service manual that states I need a special tool (Kaw Jack) for every procedure, even changing the oil. Also, I weigh 170 lbs and am 6 foot. What oil weight and height should I use? Any ideals on what settings for compression and rebound damping should I use as a starting point? Thanks alot!