Good to see this up, well done review Dave.
MBR - there is not a point talk about any base what Trumpeter used for their kit, because they simply made a copy of earlier produced CMK resin kit to the last screw (just like with their BR52 loco). This one was based probably on drawings of very first BR86 engines, as later on many areas were improved and their design changed. But still there were many mistakes and wrong bits in CMK kit anyway, and you will find exactly the same ones in Trumpeter´s kit. That is about the base - based on CMK base which was very early one (of course it does not correspond with number plates provided in both kits - once again, the same numbers and decals in both kits - there are 2 numbers provided with the kits, and both belonged to later produced locos with different frame, different valves, compressors etc...it just reminded me that CMK have mentioned in their instructions black and red painting scheme for 86 245 as that was painted in 1935, although in fact this number loco was manufactured in 1936 )
Few years ago at model show in Germany very accurate drawings and references were offered for free to Trumpy managment to make their BR57 right - well, but it would be very expensive to produce the kit well detailed and exact, they said and refused his offer. Simply they dont want and need to do their rail kits any better.
Anyway, at the end - before I get too excited - this loco painted in grey BR86 283 is located in Germany, on DEUTSCHEN DAMPFLOKOMOTIV-MUSEUM in Neuenmarkt. Every year I find a couple days to get to Germany and visit some of their great museums across the country and take hundreds pictures for my references.
Cheers
Libor