Mud grapplers and the road

Just put 33" mud grapplers on with a leveling kit. The steering kind of shimmys back and forth, on flat smooth pavement. Also the truck pulls when it hits any bumps. Chamber is .9* and caster is 1.5*. Should I try and get the caster up around 2 + to help this? Truck has factory UCA

 

Factory UCAs is probably your problem. May not be able to get it into good enough alignment to fix the pulling/shimmy without a uniball.

 

How much of a "leveling kit" are we talkin bout? If it's floating and road walking you have a caster issue and you need to get the numbers up, again the only way to do that is UCAs. Shimmy may be from poorly balanced wheels.

 

2.5" I'm going to bring it back and see if they cant crank those numbers up a bit.

 

They should be able to get it driving pretty good if your sure you are 2.5 or less. If you got the coin have the balance on the wheels checked. You didn't have any issue before lift?