As part of our hunt for helium sources - today I pumped the HAM1/HAM2 annulus volume briefly with a scroll pump but stopped as the system wasn't sealed enough -> The East door of HAM1 is currently hung on (4) door bolts and is likely not in full contact with its O-rings -> I UltraTaped the outside of HAM1's East door flange and again pumped the annulus volume but stopped as I deduced that a leak via the inner O-ring was apparent -> As such, the interior of HAM1 may have experienced some "wind"