Hi all, had a nasty misfire / warning light episode today. The number 1 spark plug well was full of oil (2 was dry). Looks like I may need a new rocker cover gasket? Can anyone help with a how to? Can I do it myself maybe? Any tips or advice or if anyone knows a good mechanic in the Brighton / Eastbourne area that can do this I would be very grateful as I can't afford a main dealer visit!