This is just a general tech question - my TR6 engine, which is really similar to the LC engine, just a whole lot smaller, has got a couple of stuck lifters due to rust/muck buildup (it's been sitting for a while) - I've soaked them in Marvel Mystery oil, kerosene, etc, but they don't seem to want to budge. (though I haven't pulled the head just yet. That's in the works) Any ideas or experience that could help out here? I don't want to pull the engine and have them machined out - that's a little extreme. I'm looking for something a little less professional and more shade tree in nature.