Last night I took my 2018 Raptor which is 1.5 weeks old (about 900 miles on it) for some mild off-roading. I tried 4L just to get a feel for it. Every gentle nudge of the accelerator to apply throttle, as well as when releasing the throttle, results in a metallic "click-clack" sound from I'm assuming the transfer case. Functionally, it worked fine. However, while the truck was in 4A and 4H, no such noises were heard. Is this normal? To me, it sounds like slack in the drivetrain.