OP, inside those wheels, there should be a small poly cap, piece P2 as instructions. Did you noticed it?
The poly cap will let you remove the wheels for painting. Actually, it will keep them in place.
Starting the interior, scraping off the roof details to replace it with Eduard's Photoetched parts.
It was late and I decided to move on and start building the engine compartment. I did not take any pictures during the process, sorry.
Moving on, the chassis received some details
And the wheels were glued together.
Using a small square to check wheel alingment.
A dry fit to check the things up