#1 PB BLASTER is the second best shit in the world under a torch LOL

#2 Use real tools, snap on tools are expensive but they won't round nuts off 99% of the time, you don't buy a drill cause you want a drill you buy a drill to make a hole. you buy good tools because you want to take off nuts without rounding them out etc.

#3 at this point your only hope is pb blaster and some decent vise grips (those are the pliers that lock).