Check your droop. The truck may not be setup correctly... Mine was way off when I pulled it out of the box. The other thing to check is for binding in the A- arms where the hinge pins go through. Mine was real bound up in the rear. Maybe yours is bound up in the front... After that I would check for fluid levels in all your shocks then check ride height with at least a half a tank of fuel, in full race form (body, receiver battery installed ect.)...This will help you with your pre-load adjustment. Other that I can say you just need to put a gallon or so on it to get everything freed up and working. I find that with all my Losi's they run better with a little slop. My 2.0 really didn't seem to feel right until I took it to a big track with big jumps!!
They say Race Rollers, you still need to go through all the setup specs.