A retork on the heads will not work on the Subies…been there done that FAR too many X. This is a known issue to Subaru…they already released a new redesigned Cyl head gasket…but I dont know when they implemented it…I DO KNOW they did release a new one though.
Retorking is an old school trick…or rather normal procedure…at least it used to be…I have done it on many cars with good results…but Subies will NOT respond to it. ALso one of the heads is right up against the frame…the drivers side I believe… YOu need to damn near remove the engine to do it… I think I did it once by taking out the engine mount bolts and jacking the engine up and letting it sag to ge to all the head bolts… ANYWAY…a Subaru will shrug off the retork…its good advice…but doesnt work here.