To recap, the object of this exercise was to check platform clearances before finally fixing them down. The County is one of only 2 outside cylinder locos that will run my pre-WW1 layout so it was the prime candidate for the job.
The good news is that it clears, just, with about a fag paper to spare. It does hit on leaving the fiddle yard on the down line but as this is under the bridge clearance can easily be remedied by some filing in what is not a visible scenic area
The chassis is complete and running apart from the brakes and the footplate assembled. The boiler is just plonked on for the pic. I had to remove a lot of metal to clear the crankpins on the rear drivers as can be seen: