I too have built the 9F. We'll almost. I has major issues with the coupling rods and sprung axles and resorted to a servo milled rods and fixed driving axles. Problems solved.
This has taken me something like 20 years off and on so far. Work and children seem to take up a lot of time.
Brian's photos have inspired me to finish it off. All thst is left is pickups, fit the RG7 and valve gear.
Loco body and tender all in plain black so far.
I also have an unbuilt parallel boiler Royal Scotland by MMP as well.
At the time they were excellent lots but as with many not always easy to assemble.