I have an 07 jk on a 3in suspension lift and 33's on it. I am having a loud knocking coming from what seems like the middle of the jeep. The problem is happening slowly as I start to accelerate and just continues to get worse as I get faster. I have a tom woods shaft and just put new U joints on it so not that. I have new upper and lower ball joints and steering. I am at my wits end on what it could be. I don't feel particularly safe driving it but need to figure out what the problem is. I have searched all of the threads and it mostly seems to be the U joints but not mine. any help is greatly greatly appreciated. thanks guys.