It sounds like the bushing got misaligned slightly as it was driven in. It will probably be OK once it gets a few miles on it. Removing it and reinstalling it closer to straight is going to be a chore. I'd suggest putting the rear axle on jack stands and do the initial break-in of the bushing by running the truck in high gear at a fast idle for a couple of hours and monitoring the temperature of the front of the torque tube with a laser thermometer.
Jerry

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