This is the stuff I use for 90's BW machines.

http://www.ebay.com.au/itm/3M-Auto-Acrylic-Foam-Double-Sided-Attachment-Tape-20mm-/280776516735?pt=AU_Scrapbooking&hash=item415f95a47f

1 roll will do a pair of siderails with plenty left over.

If you don't want to wait for an international shipment from HK then just do a search locally - but it will be the identical product.