Prepared to move interaction chamber in place. Ok CARME side, flange has M10 bolts. On interaction chamber side i.e. bellows it has M8 bolts.

DS designed this to have loose fit under assumption of  M10 side actually being 3/8 holes i.e. 9.9 mm. However holes are 10.2 mm. Furthermore Grossmontage suggest loose fit will be damaged in baking in the long term.

Dismounted bellow ring from spare bellows. Re-drilled to M10 and cleaned. Remounted. Old bellow outer ring moved with spare bellows.

Lifted interaction chamber in place. Alignment started. Will finish tomorrow morning, followed by pump down and leak test. Last step before beginning final pump down should be mounting Be window on Friday. Need US for that.