Attempted to change my lower ball joint yesterday but could not get it unstuck. Tried to heat with a propane torch, using a ball joint separator, beating with a BFH, squirted w/ PB Blaster and couldn't get it to budge a bit. Changed my upper about 2 months ago and had a very difficult time then as well. Anyone have any tips? Do I need an acetylene torch to generate enough heat? Can you cut through one of these things with a Sawzall that has a metal-cutting blade or is it too tough of metal for that? Was thinking of trying one of this big gear pullers but can't determine whether I've got enough places to hook all three arms in order to use that. Any other ideas or suggestions? Thanks.