[Tigers] Door hinges

[Baker, Kent]

Work continues on the restoration, but I find the door hinges to be somewhat
permanently attached to the doors even when using an impact wrench.  That made
me wonder if I am missing some secret Tiger knowledge about how to remove the
hinges from the door other than more penetrant, a bigger wrench, or hammer,
etc.  Feels like something other than rust alone is keeping the two from
separating.  Suggestions?