then they can tell you a rough estimate of how much its gonna be toowhy dont you bring it to a shop... they put it on a lift. then they tell you wat it is... they dont charge you unless you say yes they can do the work.
valve cover takes about 10 min....valve cover is the easiest to change takes about 30 mins
Plus you can clean off ur v/c while changing it haha
....and I am also having the same problem just been too cold to do anything