Is there a trick to removing the WP pulley off 2002 9-5 with 3.0 T? Idler and tensioner pulleys came off relatively easy, not so with the pump pulley. First time I have had the pleasure of changing out a water pump. Does the center bolt-like piece come off with pulley? Is it a bolt or part of pulley? Really no where to pry without trashing timing cover. Any ideas??