kristkustoms- Right now I'm just experimenting like you suggested with tests. Dan, I'm using 3m spray 90 and plan to spray the tweed to some parts of foam and some parts directly to sintra. I think for now I'll glue some scraps of foam and scraps of tweed to some scraps of sintra that has been sanded and unsanded and do the removal tests in a few days as kristkustoms suggested and see what happens. I'm in the test mode
Thanks to both of you for your help!