The ITMY ISI is now floating with the Quad on the optics table. The mass on the keel is now 2 stack masses, one large, one small ('820lbs), and 12 keel ballast masses, which I think

are 40lbs each, so that would be 480lbs.

  there isn't currently a lot of trim mass on the walls

  the pictures that I included are of the mass on the keel plate and the wall mass in each corner