By Stephen Culp NEW YORK (Reuters) – Wall Street wavered on Wednesday, poised to snap a three-day rally as dour earnings guidance added to mounting fears of a global economic slowdown. But those fears, along with a smaller-than-expected interest rate hike from the Bank of Canada, continued to feed hopes that the Fed might consider easing the size of its rate hikes after its Nov. 1-2 policy meeting. “Central banks are starting to blink,” said Paul Kim, Chief Executive Officer at Simplify ETFs in New York. “It’s part of the larger trend and supports the (Fed) ‘pivot’ narrative.” GRAPHIC: Central…