Slediot is bang on. Never had it easier, Pull the big through bolt in the middle of the brake side of the shaft, remove the nuts in the tunnel for the brake caliper mount, losen the track tension off, drop the skid out of the way, and work the drive shaft out of the back of the DD, and keep it going with the caliper and all, till the driver gets up against the inside of the tunnel. Then if you get the track at the same angle as the drive shaft, it'll slip right out. Just gotta be careful not to damage the seal when re and re'n the driveshaft from the DD. Remember when bolting the skid back up, to release the spring tension, weather it be torsion springs, or air from the float to get the rear holes lined up easily. And be careful the shock shaft doesnt pivot down and sit against the bottom of the track, its easy to miss till it busts stuff up.