The HAM1 +Y door was installed today.  Installation went smoothly and the O-ring cooperated by staying in place today.  I will note that torquing the door bolts is becoming more of an issue due to wrench access being increasingly limited near the 5-way cross/feedthru areas now that all the in-air cables have been attached.

The HAM1/HAM2 annulus system is being pumped by 2 turbos/aux carts on the -Y side of the chambers.  The mysterious ~order-of-magnitude pressure readout difference at the two carts on the shared annulus system is again present, as was noted the last time this annulus system was pumped down.  Not an issue per se, just some vacuum phenomena that leaves us scratching our heads.