<VV> Need something that will dissolve plastic.

[paulsiano at yahoo.com]

I inadvertently left a bottle of Windex in the engine compartment and it leaned against an exhaust header.  It was noticed after a 20 minute drive.  I now have a patch of melted plastic that I'd like to remove without damaging the header which is Jet-Hot coated.  
 
Any and all suggestions about how to fix my mistake will be appreciated.
 
Paul the klutz