Im currently in Afghanistan but i had a question about my truck back at home. When i was driving it, there was somewhat of a grinding sound coming from somewhere around the front driveshaft to tcase area. Almost like the yoke was loose or something. What could that be? The truck was in 2wd but the driveshaft would still spin a little and i would start hearing it. By the way its a np205/th350 combo with 60front/14bltrear. Thanks for your help.