First is the 'air flow' vents in the head. Violates Appendix 2, section 4a(i): ...Features which are deemed to be in breach... and therefore not permitted include holes in the head.

And the oval shaft violates Appendix 2, section 2b(i,ii): At any point along its length, the shaft must: bend in such a way that the deflection is the same regardless of how the shaft is rotated about its longitudinal axis; and (ii) twist the same amount in both directions.