I purchased this sled a couple years ago and its in really nice condition, however the one thing that seems to need work is the rear suspension. I pulled the shock and that seems to have good pressure and rebound. When I couple the suspension it stays down unless you manually pull it up. Is the spring position to low perhaps? I see there is a higher hole on the rail for the block to mount too. Has anyone ever changed that position and if so, what was the outcome and whats the easiest way to get that done? As I know its under a lot of pressure. Thx