Originally Posted by hkstroud
Can you show me a pic. How have you been using an adjustable wrench or do you mean a pipe wrench? The rod is just a way or increasing the leverage so you can do it by hand and without scratching or marring the finish. Does the arm have shoulders on the end next to the wall or are you using the wrench on the 90 degree turn at the end. I don't think you are going to strip out the threads with a 6" or smaller wrench.
Most people say Teflon tape. For this job i prefer the pipe dope. I have been told, and it seems to be correct, that neither Teflon or the pipe dope seal the threads, that they work by lubricating the threads. Try the pipe dope and note the difference in the feel as you screw it in.