Today something small, but it makes a big difference in whole look. I took that main driver set for the F-1 decapod and made some proper size counterweights for it. First i had to grind off some of that original counterweight off, as this was sticking out already and gluing new weights would interfere with spinning rods:
I just turned on the grinding wheel and delicately shaved some material off. Unfortunately i did hit the tires with the grinding wheel and had to put the wheelset in a lathe to try to smooth out the tires. Real machines had this "double crescent" weights:
Not only that, the outside crescent shape is not the same on both ends. This turned out to insanity, but i just couldn't

ignore that. So out of regular piece of paper i eyeballed the shapes and with a scalpel cut both basic shapes out:
Here is one side glued to the wheel already. Next was a final grind of the outside tire mainly to get the crazy glue (Lightning Bond) off.
After that painting:
I did fill up the space between the spokes with Lightning Fill and flooded the inside with Lightning Bond. I used automotive spray here-engine block enamel "Satin Black". Not wanting to spray in between the spokes anymore, even though i put masking tape over the rolling surfaces of the wheels, i just brush painted flat finish as a final coat:
Final weathering will even out the visible irregularities.