Miners Capstone Mining Corp CS.TO and First Quantum Minerals Ltd FM.TO were the biggest decliners on the TSX. By Amal S Oct 27 (Reuters) - Canada's main stock index fell on Wednesday as energy shares lost their footing on weaker oil prices, while investors awaited cues from the central bank on its timeline for tightening monetary policy. The central bank is facing increasing pressure to hike interest rates ahead of schedule, amid hot inflation and a recovering job market in Canada.