[slartibartfast229]

Great stuff!
Could I ask where did you get the mesh used on the air filter?
Apologies if I missed it in the text.

 

[slartibartfast229]

Morning Slarti,
The air filter mesh comes with the model.
Cheers,
Peter

Ah OK, I always try to keep a lookout for additional enhancing pieces.
It's a quite impressive upgrade you have going there, and I am enjoying the process.
For the brass rod you used for the rear suspension I would be inclined to use scrap 2.5 electric cable, which is strong and easier to bend to shape.
What's more - I tend to get hold of scrap ends which cost little or nothing.
I would not use it for axles though, brass rod is the best option there.