4 Stroke Engine Model Improved Cam Shaft

After building the 4 Stroke engine model by Zockzock I ran into the same problem as Bouss31. The cams were improperly aligned. So I printed the remix of Bouss31.

Still not satisfied, as Bouss31 already indicated, I designed the shaft with better cams. They are primitive but open and close the valves. I also added a couple of metal springs around the valve stems to assist the 3D printed springs and a screw to hold that spring in place.