There is a 15 1/2" Brooklands Wheel available that you can put in that will give you more room. It's available on e-bay from a seller in GB. As soon as I find an extra $400.00 I'm going to order one. I have the same problem as you do. For right now try leaning your upper torso as far left as you can...

Check with Coker, Lucas and others to see if they are doing any swap meets in your area. Coker was doing the Portland, OR swap meet and I ordered a set of tires and tubes and picked them up at the meet with no shipping charge.

Steve
48 TC