Can anyone tell me where to acquire a large quantity of foam like they use in the boxes for bachmann spectrum locomotives? I want to try a new method of roadbed. I think it might be effective and flexible to lay track on. I have been tol Cork is the WAY TO GO, an homasote has to be special ordered here in my locale. So I figured I might be able to find something inexpensive, yet effective. Anyone have any input on this? Thank you in advance!!!!!!!