IF you have already made adjustments to:
Hitch
Pin Box
Leaf Spring Locations
And Leaf Springs are already on TOP of axles
Then you need to have a subframe lift done WITH cross bracing at shackles
With 5vr NOT hitched ....set it up level (side/side & Front/Rear)
Then back truck up so king pin is against hitch.
Take measurements that would be needed to be LEVEL when hitched and have at least 6" bedrail clearance
Then have subframe lift done using the needed 2" X ?" channel tubing and cross channel tubing at shackles to brace side to side.
As for that CRE3000 Suspension.
Well that is Morydes 'equalizer' between the front/rear leaf springs
Nose high condition is NOT corrected by that or any Brand equalizer
Rear axle will carry more weight
Pin weight will be lighter ---causes chucking
Too light of pin weight can cause swaying condition
Get it level when hitched for towing