(30 Jul 2016, 1:29 pm)mb134 wrote Using a bus, that is being kept from it's usual route because of overheating, on the X20 sounds like a sensible idea...
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The X20 compared to the X14/15/18 is less of a demanding route.
It should also be noted 7517 hasn't been allocated regularly allocated to the X20 since being held on this restriction.
It has been allocated to the 35, Allocating it to the X20 is a last resort spare.