Made the original files scaled to 50%, found that I could make improvements at that small of a scale (gears had way too much movement and were slipping above and below each other. Removed the pins from the support with holes in their place, the holes will hold a pin with a cap which the gears fit around allowing the whole pin to move with the gear. Created a crank axle cover due to movement when rotating it.
The caps and pins correspond to the drawn image of the gear arrangement below as the pins required different lengths. In the caps and pins file from left to right 1&2 , 3, 4.
Secured the gear to the closed end of the pin and the cap on the opposite end with CA glue, as well as the cam axle cover.
The author remixed this model.