Hey all, quick question. On my '73 Challenger was having a problem of what initially appeared to be heat soak. I checked (and replaced) the starter, solenoid. Battery tests good, as does the altenator. I'm able to start the car by jumping the solenoid, and it fires right up, so I put in a push button starter for now. Has anyone had an experience like this, and if it's the ignition switch, how hard is it to change out? Thanks for the help!!