Arrears on home loans in Western Australia remain stuck at relatively high levels at a time when arrears in Queensland, New South Wales and Victoria are on the mend.Yesterday, Standard & Poor's put arrears in WA at 1.87 per cent, at June 2012, and more or less unchanged over the last two months. Arrears in the three other large states improved by between 15 and 17 basis points over the last two months, S&P said.S&P's measure of arrears is based on analysis of pools of securitised mortgages. S&P rates A$120 billion in mortgage-backed securities.