changed my valve cover gaskets today and it didn't go as bad as i thought but on the rail where the fuel line goes its leaking what is that thing called and why would it be leaking.
i did take them off for more clearance, should there be 2 shims on them 1 on top and one on the bottom?

its the one with the vacuum hose
i did take them off for more clearance, should there be 2 shims on them 1 on top and one on the bottom?

its the one with the vacuum hose