<VV> Bench Bleed New Master Cylinder

[John Green]

We are installing a new dual master cylinder on our 1965 Monza.

When bench bleeding the new master cylinder, we can see brake fluid being
pumped up into the front reservoir. It appears to be coming from one of the
two holes in the bottom of the reservoir. Nothing is coming from the rear
reservoir.

I assume that this not normal. Are we doing something wrong? What can we do to
correct this?

John Green