I replaced my gasket once and thought about replacing the elbows, but they were both clear and just needed a blast of cleaner and some work. Still, I was lost as to how to get these hard plastic pieces out...that's right, they were so dang hard that I assumed they were phenolic plastic or something like that. I would have never thought they were rubber at one point. I tried to pop one off and it chipped just like plastic. Maybe next time I have a leak from the valve cover they will come out. At least now I know what I am in for and can prepare accordingly, thanks a bunch.