We have a 1987 Ford Bronco. It starts well but there is a lot of oil coming from the valve covers. I first tried just tightening down the bolts but it still leaks back on the passenger side close to the firewall. Ok so I got the rubber gaskets from Auto Zone. I just don't know how to do this. It looks like I have to take a lot of things off in order to get down to the valve covers, like the EFI. Anyone have suggestions or a step by step way to go about it? Also how difficult is this on a scale of 1-10? Thanks a lot!!