Think you're being a bit harsh about the Raven A2s; they were by all accounts very good engines which ran until the need for overhaul and the desire to standardise on the Gresley's, under Gresley's direction, understandably put an end to them.  The A1s were as good as anything in the country except perhaps a GW Castle when they were first introduced, and improved into A3s were very good indeed; to be a Raven A2, still a good loco but not up to that standard, is no real shame.     A loco for th