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Technically they aren't Omnoms... they are the cheaper S100 1.1 cranks, and a power spline bottom bracket. I'm not even sure how possible it is to space out the power spline BB, but I'll have a look this evening.
Custom dished chainring makes obvious sense on a bike that has so far cost a grand total of £140 including the cost of a couple of tools I was missing! :-)
ewanmac-
Get a couple of 1mm bb spacers and try it out.
Failing that, a custom Talbot could be the only sensible answer.
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Technically they aren't Omnoms
Doh! That should have been obvious from the use of 130mm PCD. Moving a Powerspline to the right is the same as moving a square taper/ISIS/Octalink cartridge BB- it works as long as there's room for the NDS crank to miss the other chainstay and enough thread the allow the NDS "cup" to thread further in than normal.
TM
gbj_tester
One less tooth means about 2mm less radius, probably not enough. You can't move Omnomnoms to the right, at least not by much. You could face a bit off the NDS of the BB she'll and maybe shim between the axle step and the NDS bearing, but that's a lot of hassle for 1mm.
Custom dished chain ring is obviously the way to go, should be no more than £300 if we bundle it in with my 56T VumaChrono special ☺