Mitchell and I added 200lbs to the HAM now holding 800 lbs.  The 50lbs in the middle is sitting on the 600lb leg element on four 1/16" thick viton pads.  The three other 50s are on the ISI Optical Table but we couldn't get them to be non-rocking, two imperfect planes...  So we turned the masses over and set them on just three pads.

Next step, unlocking, torquing, cabling, TFs.