Ive just bought two cans of plusgas to add to my collection as normally i just use bigger and bigger breaker bars till one works but my track rods seem seized so will persuade with plusgas see how good it is
Use two big hammers smack either side of the tie rod ends it will pop, failing that use a jack to prop up the wishbones so there is no weight on the rods when up on axal stands.
I always use a ball joint splitter makes life easier by far!