Doug...I hope you don`t mind me jumping in on this thread?...
While on the subject of suspension and ski lifting etc...
Here`s something I`ve found not long ago while searching the net on the subject..
(cut & paste)
Suspension And Chassis Prep
Weight transfer is perhaps the most important part of setup for a grass drag sled because it helps the sled hook up and accelerate. An ideal setup allows the sled to transfer weight quickly at take off with the skis 1 to 2 inches off the ground and hold them there until the end of the run. If the skis touch the ground, the drag will slow the sled. Too much transfer would raise the front too far and not allow enough of the track to touch the ground for traction.
To check weight transfer, the driver should sit in ready position while a helper lifts on the front bumper. The front of the sled should lift fairly easy until the skis are up to 2 inches off the ground. At that point, the lift should require more effort. If this happens, it means the sled will transfer weight correctly, but stop the transfer with the skis hovering above the ground.
The correct transfer is set by lowering the front end and the back half of the rear suspension. The sled should be set as low as possible. The front can be lowered by installing soft springs, short shocks or by compressing the shocks with chains or straps. Shock spacers are the best way to lower a sled, but the shocks will have to be disassembled. Expect to pay a shop about $100 to install a set of spacers. Using straps to tie down the front end is cheap and easy, but it reduces suspension effectiveness