Last week I investigated the stray beam hitting the bellows on the spool piece by HAM3. It turned out not to be reflected from the HAM3 viewport as I had first hypothesized, but was reflected by, or originating at PR3.  Figure 1 shows that the shadow pattern indicates that the beam is coming from the HAM2 direction. Figure 2 shows that, at the viewport near where the beam hits, the viewport for the PRM camera, there is an excess of light coming from PR3, suggesting that the outer halo of the beam is visible from that viewport and the beam is coming from PR3. This beam may be slightly clipped by the MC baffle by HAM3 and worth more study.