If that's on a Nytro or Apex you have installed the rear arms in the stock holes on the rails not the ones specified in the directions that came with mine.
According to my installation you are supposed to cut off the rear mounts from the old suspension on the rails. Then you drill and attach timbersleds triangle rear mounts to your rails measuring the spot to drill by setting the height from the top of the rails to the drop bracket. I think it was something like 11.5".
From your pictures you simply attached the rear arm to the stock rail attachment which would explain your bottoming problem.
Any one else see the problem?
Otis
08 MTX 40th timbersled front and rear suspension, sly dog skis, lite battery, fox RTX front shocks