Roly,
If you back off the spring pre-load to the point where it is easier to "pull over".. you are actually compressing the shock and and using up valuable suspension travel.
When you are riding, and you have the sled "pulled over" with a compressed shock... and you encounter an obstacle (bump, ice chunk, track-rutt, tree, rock... etc) you will have no available travel to absorb the impact and have to work harder to control the sled.
Getting the sled on edge... and collapsing one side to do this are two different things.
I spoke with Jake about this at the SLC show last fall.
The Raptor shocks are top notch... but if you are relying on collapsing the shock the "get it on edge" then the shock properties pretty much become a moot point.
From a previous post of mine...
AGAIN>>> IMO...
Have a look at this video...
Rasmussen at :50 and Whelpton at 1:39
You can see that the sled is on edge as compared to having the shock compressed on that side... This allows the shock to still have travel to do work if you hit irregularities in the snow.
It is more work to learn it... but worth it IMO.
Have a look at this one...
at :28 , :48 1:13, 1:18 ... you will see that on the extreme side-hill... the uphill front suspension is basically still fully extended... the sled is on Edge... not "squatted" on that side.
THEN, FINALLY HAVE A LOOK AT THIS ONE...
Bret, at 1:54 seconds... "bumps" the tree on an extreme side-hill... the shock/suspension absorb the impact and then extends agian... If the shock was "squatted" on that side.. there would have been effectively no travel left to deal with that obstacle and he would have been bucked down the hill.... Pretty amazing move!! 
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