Thanks Paul. Agreed, painting panelling after assembly is no fun - I did it once too!Brilliant. I found out the hard way that painting panels after assembly is not the easy route!
Good idea! I have checked back to backs on the coach wheels 40.0mm +/- 0.3mm on all which I would imagine is ok. I've not checked the castle, but it now has a great many hours running in without incident on my line. The coach has only had a few laps, but it too is fine so far.That looks very nice indeed.
Worth checking the back to backs if you are getting derailments. It could be the test track is gauge widened and this is leading to derailments.