Today I vented X-end -> An Apollo crew (Mark L., Chris, Scott) removed BSC5's dome and found an insect on the underside of the outer O-ring at the exact point that I had marked as the leak location -> They lifted up this portion of the outer O-ring +/- 1' in either direction, removed the offending insect and wiped down the O-ring with an alcohol wipe -> During an overall visual inspection they also noticed a cut "sliver" of O-ring at a non-leaking location but this cut was not on the portion of the O-ring that comes in contact with the sealing surface and they left it be -> I pumped down the annulus volume following the dome's re-installation and helium leak tested only the area addressed -> No response (1 x 10-8 torr*l/sec baseline) -> This is encouraging but inconclusive as new leaks may have resulted from the dome's removal/installation -> I'll know more tomorrow.