300e valve noise

[patc]

Hey guys I've read many posts about the problem I'm having with my 91 300e, basically a valve tap which has gotten increasingly louder over the past several months. The car has 189,000 on it and is in good shape otherwise. I'm an electrician, not a mechanic and have done some mechanical work but am not sure I feel confident enough to try and takle the problem, but am considering trying. Another thing that I was wondering is that with this milage on the car, should I just have the Head redone? Any comments?