I have a rebuilt 3rd member from a well know shop in midwest and it is very very noisy. Have about 400 miles on it and I drove it 20 miles last night and put it on my lift. I touched the Axle Housing (rear center section) with the palm of my hand and it was quite warm but I could hold my palm on it without much discomfort. I tried to touch the Carrier Housing (front) and could just barely touch it with much discomfort (hot). No way I could have put the palm of my hand on it without suffering a light burn on my skin. Is this normal temperatures on the back and front? If it's not normal for the front carrier housing to be that hot, I'm thinking bad pinion bearings. Builder is telling me the noise will get better after 1000 mile break-in. I don't think so (they are blowing smoke). Let me know what you think.