Helium leak tested (4) new 10" conflat joints and (1) new 2.75" joint on GV14 adapter spool (iLIGO viewports removed, (3) blanks and (1) 10"-2.75" zero-length reducer installed) -> new joints are good but found a 4x10-7 torr*L/sec leak on nearby original iLIGO blank -> Cinched flange fasteners and leak improved to 1x10-7 torr*L/sec