Lettering removal proto 2000 hoppers

Doug Forbes

I have several black GM&O war emergency hoppers from Proto 2000.  I would like to remove the lettering and replace it with Illinois Terminal decals.  I have tried soaking the lettering with solvaset and separately with 91% isopropyl alcohol with no affect on the lettering what soever.  What do I try next?  Any suggestions would be appreciated. 

Join main@RealSTMFC.groups.io to automatically receive all group messages.