Before the authority makes a calculation (whether originally or by way of substitute) in accordance with any of the sections referred to in paragraph 6(a), or issues a precept under Chapter IV of Part I of the Local Government Finance Act 1992, it must inform the executive leader of any objections which it has to the executive’s estimates or amounts and must give to him instructions requiring the executive to reconsider, in the light of those objections, those estimates and amounts in accordance with the authority’s requirements.