Nice challenging level. Love the crankshaft! Had trouble getting off the slider on the end next to the rotating crank.
Rather than a win and a shortcut, i see this a a two gameplay level. Dynamic or static. The obvious direct win is by dynamic use of the piston and valve(budgeable) without any need to stop or use the crankshaft area. Presumably the designed win is meant to be achieved by stopping the crankshaft and making B walk when the piston is not moving. I like both solutions equally as they are so different.