I agree. Take the proportioning valve out. Why the factory felt they needed it is beyond me.
It is one strange Alien device.
I almost can see Dan Akroid with his Conehead makeup on saying that he was French being the engineer in charge, in between consuming mass quantities of beer that is?
Hum. A second thought was maybe it was Alejandro? He said he was from Argentina, but can he prove that? LOL.