[glenview289]

A couple of thoughts. You could move the inflow to the end like you mentioned, but would probably need some way regulate the flow on the passenger side to move more air over to the drivers side which is more important. Or you might put a second inflow hose before the passenger side (i.e. end), move your damper between the two sides to create two separate zones and connect the two hoses with a "Y" before the fan. I see the second idea as the easiest to do. Keep us posted with your progress.

Bill