Don, don't make any snap decisions and think this thing through. As you suggested I would trailer it to the reman shop and let them listen to it. With only 400 miles on it I would hope you have a warrantee of some kind? Don't take any chances by continuing to drive it.
I also give you lots of moral support because I too know what it is like to have a clunkedy clunk and wonder "now how much is THIS gonna cost". Good luck pal and we all wait to hear what you find.
