The base layer of the Keel Payload is positioned per D1001514-v2 each atop 2 square inches (1.41x1.41) of 0.25" thick viton in each corner (see image).  The second layer is stacked on and the third layer is near by.  All the heavy lifting got Jim a bit sweaty and me a bit winded so we decided to call it there.  And Betsy reminded to feed Jim and that the HAM3 table which was ready to be locked.  We'll complete the bolt down and stacking after lunch.