So I bought a salvage title 2021 Honda Civic thats been completely restored and while the actual salvage yard marker pen markings are gone, there is still a 'shadow' of where they once were. None of the techniques Ive read about have worked. Ive tried Invisible Glass and pure rubbing alcohol but it seems as if the residue is literally IN the glass. The only thing I haven't tried so far as the brake cleaner method which I'm obviously wary of considering how abrasive that stuff is. Can someone recommend something else or a different technique or do I need to escalate right to using brake cleaner?