My DBXL with stock motor and Bartolone tuned pipe pulls to the left off the line. It straightens out, then pulls to the right at the peak of the power band before going straight again at max speed. It will roll straight. I have replaced all four suspension arms replaced every wheel hub and outdrive bearing on the truck replaced the steering drag link refilled the shocks with 5000cst fluid refilled the diffs with Front/Center/Rear weights of 50k / 100k / 30k replaced all hinge pins, hinge pin braces, and hinge pin brace inserts replaced the tires and wheels with losi 5t wheels and proline trencher tires (original dbxl foams) I'm well on my way to building a new truck here. I cannot figure out what is going on. The wheels spin straight if I prop it up on a bucket and blip the throttle. I don't believe the servo arm is glitching. Here is some video footage of it pulling to the left on throttle. Sorry for the camera work. I was trying to record and drive at the same time. Here is the truck propped up on a bucket. I am losing my mind with this truck. Does stiffer fluid in the front diff make sense? Are the weights of different brands all about the same at these values? I know under 1000cst the weights are not interchangeable. Would more front toe out help stabilize it on power?