Oregon’s unemployment rate dropped to 8% in September while the state added 5,100 jobs, but state employment officials say the pace of economic improvements is slowing.  Oregon Employment Department Economist Gail Krumenauer says that follows a national trend.  She added while some sectors are bouncing back, others are not, most notably manufacturing.  Krumenauer says manufacturing employment is down by 18,000 jobs from where it was in Oregon last year.