Sorry if this is not in the right spot but I have a quick question I own a 1983 300sd that has at least 300,000 miles on the body and rear end. trans was just rebuilt 2 days ago and the center drive shaft support replaced about a year ago. my problem is that if you are under the car and you grab the drive shaft you can turn it even when the car is in park I say about a 1/4 a turn and I don't know if there are any adjustments you can make o the rear end or not. I am also hearing like a clanking noise and it only happens if you are doing like 45 and you are barely into the throttle and it will do it like 2 or 3 times and I can't figure out what it is I also know that the uv joint is good as well.. The other question I have is does anybody know where the wiring short would be behind the radio because if mine is hooked up like it is suppose to be some times the radio nor the cigar lighter will work. Please help and sorry about the long message