After the update on the Nasa-forum (russian-space), the next update here. ;-)
I reworked the trail-spades by removing the lower parts.


As a result, itīs easier to show, that they are "digged" deeper into the ground.
I had to be careful, the spades can break! I broke away small parts from the first one.
With the other, I tried an other technique.
I made 2 cuts at the two vertical holders (the things with the holes), and 2 cuts on the sides of the spades.
After that, itīs easy to bend (and break) the un-wanted part. One "session" with the sanding-tool/ filer later, they have a cleaner look.
Also I added the connection-rod for elevating the barrel, but I cut it into two pieces.
(can be seen on the lower picture, next to the wheel on the left side)
Darren, itīs a fine idea, with the kit-build-feature! I will try this later. ;-)
For the dio, my idea was using fine sand (mixed with wood-glue) as a base and the (white/grey) content from cat-toilets, for small stones. ;-)
Later, all gets a dark-brown color and a covering with snow.
Soeren