Need some info...Smith uniflow tank

I'm flying this afternoon, and I want to use a new Smith uniflow wedge tank I have. It has three tubes, and I'm not sure which is the fuel pickup and which the uniflow vent.

There's a straight tube out the bottom, I assume the overflow. The other two are curved toward the front, one coming out the top and one out the outside of the wedge. The latter exits the tank a little below the centerline of the wedge, curving forward and ending even with tank bottom.

I'm guessing one of the curved tubes is the vent, but which?

Den:

My bet is that the uniflow tube is coming out the top of the tank... the feed line from the center of the wedge. Cap the vent, point the uniflow forward (a lot of folks run the uniflow in towards the fuse. centerline or even to the inboard side , but a lot don't and it seems to be a moot point most of the time.

See Ya