hmm, i thinki got some on my spark plug as well. you'll need to replace the spark plug lower tube seals. it requires removing the rocker arm assembly off and doing a valve adjustment. i did mine the other day and it probably took around half a day.

id highly suggest getting this one kit off ebay, it is a felpro valve cover gasket kit and the valve cover gasket is made out of silicon...yay.
item number# 7989306647