(05 Jan 2017, 8:32 pm)neilwatson wrote Also will a 200 MMC on 71 be counted as odd if it's meant for 30/31/36.

Not really - there's 2 spare on top of the PVR for the 30/31/36 and I believe it was mentioned at least one of the spares would be allocated to the 71 to cover the evening NEXUS contract requirement.
Same as when Stockton got 27157-81 - once the service changes took place, the unbranded examples were allocated to the 52/35 rather than having 9 spare buses. Indeed now, Stockton's E300 route allocation only leaves 1 spare example out of an allocation of 41.