Well, I've ordered the wheels. Progress, albeit still nothing that requires me to pick up a tool (unless a credit card counts as a tool?!), but progress nonetheless!
If my vernier calliper skills can be believed then, if the kit was built as designed, the frames would be 26.25mm over width. I'm still torn between the simplicity of building the kit as designed and reducing side play with washers or my anally retentive desire to get things as right much as possible! However, as it's such a well designed kit there are a LOT of components that would need to be made or altered. Though I'm sure if I succeed in doing that the work would involve useful lessons in piercing saw skills etc. It will be interesting to see what parts Cynric saw fit to replace with his etch design as that might save a lot of effort!
Cheers,
Alex