Continued with work blanking off CM1 flange.

- Placed lead shot on left and right side of the CM1 flange to lower fields. No significant change, went from 2.8 mSv to 1.9-2 mSv.

- Inspected indium flange, some residue on 3 and 9 (left and right) clock sides of knife flange. No significant indium stuck on, some small cleanup done.

- Spare blank off test fitted, did not fit: rocking felt from side to side. CM1 flange seems to be ovalized. Test fitted an aluminum carrier ring (B-3471), fit. Difference in OD sizes is 5.560 vs 5.550 (indium carrier ring is smaller). Will skim blanking plate to 5.550" and reassemble blank off.

Work to continue next week.