[Illogikal99]

ok, so I have to remove a few rod holders and 2 of them have aluminum backing plates and stainless hardware. galvanic action has absolutely frozen these things in the aluminum! It is a very tight spot and I've tried really cranking the bolt heads and bashing the bottom of the bolts with a hammer, nothing has budged em! Does anyone know of a chemical I can use to eat through the oxide around the bolts without destroying the fiberglass? The only other idea I had was to cut off the bolt heads but this could damage the rod holder. The previous owner was a good guy but I cursed his name a few times today for using aluminum with stainless fasteners! any ideas???