Need some help from a rust guru!

I'd be curious to know exactly what you used because the EPA banned methylene chloride or whatever the chemical was called that was in paint strippers. This was a year or two ago?

I haven't been able to find a paint stripper that'll even put a dent in automotive paint since.
They didn't ban Methylene Chloride (the stuff that puts people who don't read the instruction to a permanent dirt knap). They banned the use of it in domestic paint stripper. I can buy a 5 gallon bucket of methylene chloride anywhere. There may be some who didn't take it off there shelves and some is still available here and there. I went to my local lumber/hardware store a few months ago and they had taken it all off the shelf. Roundup too. I asked them why do they still have ladders? Morons.