(02 Jun 2014, 10:24 pm)palatine3833 wrote 7477/8 are the spare deckers for the X1/2, with at least one on the service every day since there are 6 boards but only 5 Geminis

Durham should run 4 Gemini's and 2 Pulsars on their boards. That effectively gives them 5 Gemini's for 4 boards.

7477/8 should only be on there to deputise for a Gemini, not in place of a Pulsar.