When running down the road, on the gas, the raider makes a humming noise thats pretty loud until you let off the gas and start coasting and as soon as you get back under power again and start accelerating again it comes back. Its been about 6 years since I owned my last TJ and I remember noises that I always attributed to the Mud Terrains I was running but this truck didn't come with real agressive tread. Is there something I should look into that you guys can think of. The tranny fluid looks good and clean although overfilled and I havent drained the diffs yet. But the guy I bought it from rebuilt the motor and ive now put a fuel cell and Weber on it. Can the collective mind think of anything that are common issues I should look into?