I have do do the same thing... well, I don't know that my valve is bad, but the upper elbow is cracked and leaking. I wish they would have put it futher forward... but everything can't be out in the open.
also, and sorry to hijack the thread... but how tight was that piece that attaches to the valve cover? mine just slips in and out... I am wondering if the grommet is missing or worn.