I added a blank 4.5 in CF Flange to the top of the cube, and 2x25 pin D-Sub 4.5 in CF Flange to the side of the cube, and 4.5 in to 2.75 in reducing 4 way cross to the top of the prism for the RbQ MOT Chamber. I tried the molded viton gasket, but it seemed a bit too large. The unmolded viton gasket, even for the "vertical" flange orientation where the gasket doesn't sit nicely, were fine. I treated the gasket like a copper gasket by putting it on the flange and quickly bringing the flange and gasket toward the chamber.\

I tightened all the bolts with a small wrench, a small socket wrench, and finally to 50 in lb (5.7 Nm). We need a torque wrench that can go to lower values.