[DJ S]

I'm entirely rebuilding my front axle and now I've gotten to the point where I need to remove the front spring perches. One came out no problem but the other one won't budge. It looks like someone has been at this before and the threads are slightly mushroomed. I've been soaking it with PB blaster and have applied heat from a propane torch but nothing seems to be doing anything. Any suggestions and is there any hope in saving the slightly mushroomed threads?