Not trying to hijack but what are you looking for as far as dialing in the suspension. I know you do not want to bottom out so can you expain your set up ?
As far as rear suspension it really comes down to "balance" between the front track shock and rear track shock. A lot of guys that want an aggressive set up tend to set both both shocks to stiff, thus taking away performance and actually minimizing the the capabilities of the suspension.
From what I've seen and read, for an Assault most guys will raise the front suspension mounting to the "upper" position, thus reducing the angle of attack on the track. Next adjust your rear track shock to your rider weight, per manual is a good starting point. Then loosen the front track shock up a a little. With changing the front mounting position and adjusting both track shocks, the Assault should get up on the snow faster and make deep snow handling closer to the RMK verses the "wheelie monster" the Assault usually is.
Don't be afraid to continually tweak the front track shock to make it handle the way you want. More spring pressure on the front shock will make the front wheelie more and less front spring pressure will add ski pressure (less wheelie effect)
The rear track shock is just the opposite, more spring pressure equals more ski pressure (less ski lift) and less spring pressure equals less ski pressure (more ski lift).
It's basically a balance and getting that set-up so the suspension works for your weight and riding preference.
Front suspension really comes down to personal preference, I found some guys like to run the front on the stiffer side and like it and others run it on the softer side.
I've messed around and just play with the clickers. Rough trails, higher on the clickers and powder, I've backed off a bit. Just make sure and don't run the front shocks to soft. Otherwise in a side hill you have the suspension compressed and when you hit a rough spot or something under the snow, the shock is unable to soak up the bump and it makes for a rough ride or you getting bucked off.
The beauty of the Assault is the endless ways to change the suspension for different terrain and different riding styles.
Damn, we need some snow, that was a little long winded, we all need to get out and RIDE!!!