Does anyone know how to mount a granny ring to an e13 Super Spider?

http://www.e13components.com/product_superspider.html

It can't mount directly as that won't leaving enough space for the chain to fit, but if you space it out the mounting bolts will be too short.

Any ideas? I have emailed Silverfish but no response, and fired off an email to e13 this morning, but I expect they're all probably still asleep that side of the pond.