(15 Aug 2014, 9:36 am)Dan wrote It might be to do with the modifications it's undergoing to provide a higher mpg (an e-fan or something?) - one of GNE's Blaydon Racers Citaros is undergoing the same modifications as a trial as it apparently provides a 10% fuel saving.
4712's exhaust was relocated to the normal location underneath the engine last year - it's so far the only Temsa to be modified to that level, all the others have only received the new cooling system.