6044ba49a0
The ties needed a different signal, not a longer scan. Banks carry one: a seek chunk sitting on a packet boundary, so seek_pos % 2048 IS the data offset. On the 6033 labelled banks with a seek before their first RIFF, 6031 agree (99.97%) -- better than the packet scan and structural rather than statistical, so scan_data_offset now tries it first. On the scan's 28 ties it resolves 26 correctly and 0 wrongly (2 have no usable seek). Combined rule scores 7354/7358 = 99.95%, up from 99.62%. 762 of the 1495 RIFF-less banks carry a seek, so the signal exists where it is needed. Also ruled out, since a wrong offset was this page's whole subject: the header is not audio being discarded. Adding 0 to the candidate set, it wins 6 of 7358. 7 disc tests pass.