Caller obj_id 99 spanning 2x2 fine blocks: driven rows carry the single remapped owner 0 across several block ids, accepted; source id unchanged. Caller ids (99, 7) under one tube are rejected at amplitude 0 and .002 on the 32x24 fixture; source ids unchanged. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>