Gavin & Hugh WP 8384 to secure the Support Tubes in the Chamber and stabilize them for transport for use in the A+ expanded Filter Cavity.

Following T1800511, the A+ SEI External Support Structure Installation Procedure, well we skip to 3.2.1 and attach the u-channel and mount blocks-see photo 1.  The H2 support tubes are a shorter version and the 1/2" spacer, D1100076, is too thin to allow the U-channel to clear the cap clamp.  We scrounged PEM 3/4" spacers, see photo 2, and completed the installation.  We then added Mount Block 2 allowing jack support, photo 3, and the removal of the Crossbeam Clamp Cap, D080375, see photo 4.