Well I am pretty certain its the CV's but not 100%. I dont have any skid plates. It happens mostly under acceleration, havent noticed any change when turning. It really started on our Hells revenge trip in Moab. I was driving with an open boot most of the week cause my band came loose on the way Moab. There was plenty of grease so I let it go for a couple days. I may be regretting it now. I was going to pull the CV's and see were that left me but its a lot of work and I got lazy. I was thinking of pulling the front drive shaft and seeing if that made a difference.