Check the link I posted to their adventure crankset. If offers a 30T inner ring and uses a 90mm BCD. Either FSA neglected to mention the smaller BCD or they don't really offer those rings on that crank. It is geometrically impossible to do a 110mm BCD 30T ring. Even aligning the bolt holes with the teeth (using 5 bolts) doesn't create enough space to make it work, unless they are using tiny bolts.