A CONSTRUCTION worker found storing more than 14 kilograms of opium in his home was yesterday sentenced to 21/2 years' jail at the High Court. Passing sentence, Mr Justice Saied accepted that Ngai Sui was only a storekeeper of the drugs. He was of the view that five years was a proper starting point and reduced it by half after taking into account the guilty plea. Ngai, 47, had admitted a charge of trafficking in a dangerous drug which involved 14.04 kg of opium. Crown Counsel Michael Haselden said Ngai was intercepted by Customs officers on April 17 at the lift lobby of the Sha Tin building where he lived. Ten methadone tablets were found in his pocket. Officers discovered another 13 similar tablets, the opium and a small amount of heroin in his flat. Ngai's counsel, John Marray, said his client started taking heroin to relieve his heart problem and later changed to methadone and opium. He met a seaman in China who offered to bring him opium but when he went to collect the drugs it turned out to be a larger quantity than he expected. Ngai was only a storekeeper of the drugs, said counsel, asking the court to consider the guilty plea.