I have a 2003 Rockwood freedom and I Just repacked my bearings. This is my second time repacking them, and I am having issues with one side running hot. I did both sides, and my passenger side feels warm to the touch, but my drivers side is hot (almost to hot to touch). I used a high temp grease, and I only took a 10 mile drive down the interstate to make sure everything was good. What could cause this?