For what it's worth I thought I'd add my 73 story.
When I first took mine out of the box a couple of bits had fallen off of the fuel tanks and a window wiper was missing off of one end. The loose parts were easily glued back on once I'd worked out where they came from, and Hattons kindly sent me a wiper which saved me having to return the model.
Like others on here I was disappointed with the cab lights being permanently lit on DCC. I have now modified my BR blue large logo example in order to to make the cab lights work individually from the aux1 and aux2 outputs from the decoder. I did this in a similar way to MC in post 877 except that I moved a couple of resitors instead of cutting the tracks.
I also crossed over the motor wires to overcome the directional lighting problem. Dapol's solution of changing CV29 didn't work for me as on the decoders I have it not only changes the direction of the loco, it also changes the direction of the lighting, so overall - nothing gained. I could have changed other CVs to achieve the desired result but to me changing the wires over seemed the best overall solution.
In tracing out the circuit in order to modify it I couldn't help wondering why Dapol let the blunder with the directional lighting through in the first place. It seems to me that they must have known the main pcb was wrong as if you plug in say a Bachmann dc header the lights work wrongly on dc in the same way as they do on dcc. This suggests Dapol made their header "wrongly" in order to make the lights work correctly on dc, on a sort of 'two wrongs make a right' basis. Whichever way you correct the main board, either by crossing over the motor wires or crossing over the lighting connections, (depending on which end of the loco you want to call the front), it will now be wrong if you ever want to remove the decoder and plug the header back in and use it on dc, (unless you use another companies header). So to correct the problem properly Dapol will need to modify both the main pcb and the header plug.
Anyway apart from having to muck about with it like this (which to be honest I actually quite enjoy) I am otherwise quite pleased with the model. The only thing I would say is that to me the yellow ends look a bit too 'primrose' coloured in some lighting conditions but then, as I remember, the real thing could look various faded shades of yellow over time so I'm not too bothered about that, although if I'd had the Inter-City liveried one I don't think I would have been so happy!