(Repeats from Friday. Updates chart) ** S&P 500 advances 0.8% as Fed chief Powell sends strong signal of an interest rate cut later this month ** All three major averages close at record highs, though there still may be trouble ahead ** Indeed, the SPX may be running out of time and space , just as the NYSE may be running out of gas ** And this with the Dow Industrials and Dow Transports out of sync ** Majority of sectors gain: Energy and consumer discretionary most buoyant