When we left last time, it seemed that all I had to do was put the ply trackbed on and that would be it. Well, in the words of the bard,The best laid schemes o' mice and men gan aft agley' and mine definitely have gan aft agley today.
I realized this morning that the unsupported spans were probably going to sag, and on consulting Barry Normans book again discovered that my raised bits should probably have run the length of the modules, rather than across like I have done. Just as well it wasn't terminal and all I needed to do was make some more beams that spanned the gaps, and then I could just screw the track base down to them. So, back out to the garage and more gluing, nailing and cutting in store. A few hours work later and I think I'm finally done with this bit.
Still, if I want it to last a few years (ie more than about 5) I may as well make a decent job of it now. the trackbed was then screwed on top, to finally finish things up
The surprising thing is that even with all the extra engineering stuff, the all up weight is only about 4-5 Kg, which is manageable by one person fairly easily.