A short update and another pic. In the end, rather than carbon spacers, I used a bit of 1" aluminium tubing cut to size and machined at the ends to cover the exposed threads on the fork tube. Kinda matches the bike
I decided to go with a high rise adjustable quill stem to raise the handle bars.
A new Marathon Big Apple (20" *2.0) is on the back and a spare Continental Contact I had lying about is on the front. This has the effect of raising the back and lowering the front which helps balance out the slight height increase on the front resulting from the retro fitting of the Moulton APB forks. The Big Apple also adds some comfort to the rear.
My next task is to rebuild the rear wheel with a S/A S2C to replace the beast of a 7 speed SRAM hub and drum brake. Its certainly an interesting hub and is the largest I have ever owned. Too big and heavy and not needed for cycling round Cambridge though. The S2C will also leave me with only one cable for the front brake
Finishing will require a good overall clean, new chain and the mudguards sorting out. I might also swap out the main chainring with a spare Brompton 50T I have. Oh and swap out the cheap nasty pedals.
Regards
Jerry