A perfect fit in their own place, the Houston Astros are halfway home. George Springer and the Astros broke out the bats early this time to keep up their unbeaten October run at spirited Minute Maid Park, beating the Los Angeles Dodgers 5-3 Friday night for a 2-1 lead in the World Series. ''We're very comfortable here,'' Astros manager A.J. Hinch said.