[Grumpy old man]

Use regular gasoline , I have been building interiors for 35 + years and it's really the only thing that will SLOWLY eat the glue and still retain the original grain on the panel ,Now of course you want to be outside to use it and away from any ignition source but it works and won't melt the panel like lacquer thinner or acetone will . the old tweed when soaked will release from the panel and then you can start the long cleaning process using gas and a rag ,many times the panels were covered because they were already damaged by the sun and dry rotted already , take your time and it will come off .