I was talking to the guy that owns the warehouse next to mine today and it turns out he owns a rubber extrusion company called Viking Extrusions. They make all manner of things out of rubber including replacement rubber parts for a lot of classic car clubs. I got him to take a look at the quarter light rubbers on my Highwayman. He tells me that they are moulded and shaped which he can't do but he can easily do a copy of the profile and produce unshaped lengths. You would have to cut it to length and cut out the little hole for the hinge at the top but he reckons they would fit fine and work out approx. £6 to £7 each side. If someone can supply me with a small piece of 1/4 light rubber a couple of inches long he said he will quote.
ITS JUST COMMERN SENSE TO HAVE ONE