If those are what you see it doesn't look like your valve cover gasket is bad at all. If you have been in the heavy rain or washed motor down lately, it's just grime that has collected in the drains and just washed down oil and water don't mix. There are 4 orings in valve cover itself seperate from main gasket, that's what would cause the oil to leak by into spark plug drains. I would clean it up good and watch it when weather is dry. if it still shows oil replace the two that show wear. I keep them on hand if needed. Thx for pm and hope I helped.