nothing wrong with paranoid, the oily plug is what would worry me the most, the canister hose would be a " watch for a while" intakes are notorious for leaking, took me a couple of times to get it right, you could be drawing a little
oil in the intake runner from the bottom making the plug oily. i had to remove my intake and open up the pushrod holes to get enough clearance for the 3/8 pushrods, what intake gaskets are on it?