The main problem is that the connecting rods (boxes) are mis-aligned with the circles and pistons; try rebuilding your engine.
However, it is best to have the springs strong and less wobbly. I would use about -0.1 damping for spring engines.
Whatever you decide to do, good luck.
This was a fun game!
I think only one thing needs to be fixed.
At the end, right after the button elevator thing, you have to touch the pink spring bound bridge support to remove it. The translucent magenta triangles that you are on at that time should extend all the way to where the solid pink bridge will be.
If you're confused, see this picture. http://bliu1.tk/images/al … apture.png