No worries mate, it's such a rare problem I'm certain you won't ever be contacted by Ford's Re- Acquisition division like I just was to finalized the buy back of my RS. Why? Because it is more likely that the occurrence of a major failure requiring months to repair is so unlikely to happen to an RS that Australia doesn't even have a team to only deal with any replace or reimburse Southern Hemisphere residents. You Lucky Dogs!This is all getting fairly tedious, so here's my decision. I believe the issue is a combination of incompatable gasket design with the RS block and poor maching primarily on the head.
I cant see my car going in for a dealer tech to mangle for any as yet announced recall (which BTW I read was likely to not actually be anything more than a customer satisfaction action or some such thing and at the customers request, which is a sneaky way of Ford not admitting any issue but keeping customers that are worried happy)
No, mine will be undergoing regular boroscoping with my flex head boro which views the area of concern perfectly just as I have done for many many years on commercial jets. Look at the areas of degredation, and make a decision on continued operation.
If it shows signs of degredation I'll pull the head and do the gasket and check the head and block for flatness and finish. WCS I will need to pull the engine and get the block decked. Intermediate scenario, C gasket and get the head refinished (most likey outcome) best scenario (apart from no issues at all) is gasket only.
I'm far more comfortable with this than sending it to a dealer for them to pull the head. That gives me nightmares.