I have a 2014 F150 STX 5.0. I recently replaced the driver side hub, axel and IWE actuator. In 2x4 no noises or anything abnormal, but when I engage it in 4x4 and start to move I’m getting a grinding noise and the occasional clunk from the driverside hub. All parts were installed correctly wondering if this is a vacuum issue or maybe a transfer case issue. Thanks.