The first section of the feeder track is now in place.
This picture shows boards B5 and F5 with the double-track feeder from the storage sidings (B5l), eventually destined for the station (B1u). The track is not fixed; I only put it down to test the alignment through the curved sections. The final elevation of the feeders in this picture is about 5.5cm above base height, and the maximum gradient (~3%) is about half what you get using Hornby inclined piers at their standard spacing. I want to avoid going any steeper than that if at all possible.
Eventually, all of the track bed shown here will be covered by scenery, and the track will emerge from a tunnel portal into a cutting just to the left of this picture.
I have not paid any attention at all to the front boards since I first built them months ago, and I found that I had to put a lot more front-to-back bracing on board F5 before I could fix any track beds. I will of course have to do the same for the other front boards when I get to them.
The plan of attack is to complete the entire outer mainline loop, right round to the LH station approach, and then work on the inner mainline loop which connects the RH station approach to the LH storage sidings.